68679685 has 16 divisors (see below), whose sum is σ = 85587840. Its totient is φ = 52843840.

The previous prime is 68679673. The next prime is 68679691. The reversal of 68679685 is 58697686.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-68679685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44334 + ... + 45856.

It is an arithmetic number, because the mean of its divisors is an integer number (5349240).

Almost surely, 2^68679685 is an apocalyptic number.

It is an amenable number.

68679685 is a deficient number, since it is larger than the sum of its proper divisors (16908155).

68679685 is a wasteful number, since it uses less digits than its factorization.

68679685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its digits is 4354560, while the sum is 55.

The square root of 68679685 is about 8287.3207371261. The cubic root of 68679685 is about 409.5209256592.

The spelling of 68679685 in words is "sixty-eight million, six hundred seventy-nine thousand, six hundred eighty-five".