68679715 has 16 divisors (see below), whose sum is σ = 90923616. Its totient is φ = 49478400.

The previous prime is 68679713. The next prime is 68679719. The reversal of 68679715 is 51797686.

It is not a de Polignac number, because 68679715 - 2¹ = 68679713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68679713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10221 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (5682726).

Almost surely, 2^68679715 is an apocalyptic number.

68679715 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68679715 is a deficient number, since it is larger than the sum of its proper divisors (22243901).

68679715 is a wasteful number, since it uses less digits than its factorization.

68679715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25830.

The product of its digits is 635040, while the sum is 49.

The square root of 68679715 is about 8287.3225471198. The cubic root of 68679715 is about 409.5209852868.

The spelling of 68679715 in words is "sixty-eight million, six hundred seventy-nine thousand, seven hundred fifteen".