68715867 has 16 divisors (see below), whose sum is σ = 100985472. Its totient is φ = 41214720.

The previous prime is 68715733. The next prime is 68715869. The reversal of 68715867 is 76851786.

It is not a de Polignac number, because 68715867 - 2⁸ = 68715611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68715869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7533 + ... + 13934.

It is an arithmetic number, because the mean of its divisors is an integer number (6311592).

Almost surely, 2^68715867 is an apocalyptic number.

68715867 is a deficient number, since it is larger than the sum of its proper divisors (32269605).

68715867 is a wasteful number, since it uses less digits than its factorization.

68715867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21578.

The product of its digits is 564480, while the sum is 48.

The square root of 68715867 is about 8289.5034230043. The cubic root of 68715867 is about 409.5928279734.

The spelling of 68715867 in words is "sixty-eight million, seven hundred fifteen thousand, eight hundred sixty-seven".