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68364113 = 503913567
BaseRepresentation
bin1000001001100…
…10011101010001
311202122020221012
410010302131101
5120000122423
610441140305
71460041166
oct404623521
9152566835
1068364113
1135653a74
121aa8a695
131121804c
14911806d
156006078
hex4132751

68364113 has 4 divisors (see below), whose sum is σ = 68382720. Its totient is φ = 68345508.

The previous prime is 68364091. The next prime is 68364133. The reversal of 68364113 is 31146386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31146386 = 215573193.

It is a cyclic number.

It is not a de Polignac number, because 68364113 - 28 = 68363857 is a prime.

It is a super-3 number, since 3×683641133 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68364113.

It is not an unprimeable number, because it can be changed into a prime (68364133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745 + ... + 11822.

It is an arithmetic number, because the mean of its divisors is an integer number (17095680).

Almost surely, 268364113 is an apocalyptic number.

It is an amenable number.

68364113 is a deficient number, since it is larger than the sum of its proper divisors (18607).

68364113 is a wasteful number, since it uses less digits than its factorization.

68364113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18606.

The product of its digits is 10368, while the sum is 32.

The square root of 68364113 is about 8268.2593694199. The cubic root of 68364113 is about 408.8927351456.

The spelling of 68364113 in words is "sixty-eight million, three hundred sixty-four thousand, one hundred thirteen".

Divisors: 1 5039 13567 68364113