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68399701 = 79865819
BaseRepresentation
bin1000001001110…
…11001001010101
311202201001202021
410010323021111
5120002242301
610442013141
71460250016
oct404731125
9152631667
1068399701
1135678787
121aaa71b1
131122b2c6
14912700d
1560118a1
hex413b255

68399701 has 4 divisors (see below), whose sum is σ = 69265600. Its totient is φ = 67533804.

The previous prime is 68399699. The next prime is 68399707. The reversal of 68399701 is 10799386.

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.

It is a cyclic number.

It is not a de Polignac number, because 68399701 - 21 = 68399699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68399707) 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, 432831 + ... + 432988.

It is an arithmetic number, because the mean of its divisors is an integer number (17316400).

Almost surely, 268399701 is an apocalyptic number.

It is an amenable number.

68399701 is a deficient number, since it is larger than the sum of its proper divisors (865899).

68399701 is an equidigital number, since it uses as much as digits as its factorization.

68399701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865898.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 68399701 is about 8270.4111747845. The cubic root of 68399701 is about 408.9636746572.

The spelling of 68399701 in words is "sixty-eight million, three hundred ninety-nine thousand, seven hundred one".

Divisors: 1 79 865819 68399701