68657079 has 8 divisors (see below), whose sum is σ = 91977472. Its totient is φ = 45554040.

The previous prime is 68657077. The next prime is 68657107. The reversal of 68657079 is 97075686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68657079 - 2¹ = 68657077 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 (68657077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53599 + ... + 54864.

It is an arithmetic number, because the mean of its divisors is an integer number (11497184).

Almost surely, 2^68657079 is an apocalyptic number.

68657079 is a deficient number, since it is larger than the sum of its proper divisors (23320393).

68657079 is a wasteful number, since it uses less digits than its factorization.

68657079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108677.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 68657079 is about 8285.9567341376. The cubic root of 68657079 is about 409.4759892953.

The spelling of 68657079 in words is "sixty-eight million, six hundred fifty-seven thousand, seventy-nine".