68684759 has 16 divisors (see below), whose sum is σ = 81068064. Its totient is φ = 57369600.

The previous prime is 68684729. The next prime is 68684797. The reversal of 68684759 is 95748686.

It is a cyclic number.

It is not a de Polignac number, because 68684759 - 2⁸ = 68684503 is a prime.

It is a super-2 number, since 2×68684759² = 9435192237776162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68684759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68684729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33467 + ... + 35459.

It is an arithmetic number, because the mean of its divisors is an integer number (5066754).

Almost surely, 2^68684759 is an apocalyptic number.

68684759 is a deficient number, since it is larger than the sum of its proper divisors (12383305).

68684759 is a wasteful number, since it uses less digits than its factorization.

68684759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258.

The product of its digits is 2903040, while the sum is 53.

The square root of 68684759 is about 8287.6268617741. The cubic root of 68684759 is about 409.5310104366.

The spelling of 68684759 in words is "sixty-eight million, six hundred eighty-four thousand, seven hundred fifty-nine".