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68496379 = 79785197
BaseRepresentation
bin1000001010100…
…10101111111011
311202212222100221
410011102233323
5120013341004
610444040511
71461131620
oct405225773
9152788327
1068496379
1135734386
121ab33137
1311263303
149150347
156030354
hex4152bfb

68496379 has 4 divisors (see below), whose sum is σ = 78281584. Its totient is φ = 58711176.

The previous prime is 68496367. The next prime is 68496403. The reversal of 68496379 is 97369486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97369486 = 248684743.

It is a cyclic number.

It is not a de Polignac number, because 68496379 - 27 = 68496251 is a prime.

It is a super-2 number, since 2×684963792 = 9383507872223282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68496479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4892592 + ... + 4892605.

It is an arithmetic number, because the mean of its divisors is an integer number (19570396).

Almost surely, 268496379 is an apocalyptic number.

68496379 is a deficient number, since it is larger than the sum of its proper divisors (9785205).

68496379 is an equidigital number, since it uses as much as digits as its factorization.

68496379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785204.

The product of its digits is 1959552, while the sum is 52.

The square root of 68496379 is about 8276.2539231225. The cubic root of 68496379 is about 409.1562640801.

The spelling of 68496379 in words is "sixty-eight million, four hundred ninety-six thousand, three hundred seventy-nine".

Divisors: 1 7 9785197 68496379