68668475 has 6 divisors (see below), whose sum is σ = 85148940. Its totient is φ = 54934760.

The previous prime is 68668429. The next prime is 68668513. The reversal of 68668475 is 57486686.

It is a happy number.

It is not a de Polignac number, because 68668475 - 2¹⁰ = 68667451 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1373345 + ... + 1373394.

It is an arithmetic number, because the mean of its divisors is an integer number (14191490).

Almost surely, 2^68668475 is an apocalyptic number.

68668475 is a deficient number, since it is larger than the sum of its proper divisors (16480465).

68668475 is a wasteful number, since it uses less digits than its factorization.

68668475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746749 (or 2746744 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 68668475 is about 8286.6443751376. The cubic root of 68668475 is about 409.4986435760.

The spelling of 68668475 in words is "sixty-eight million, six hundred sixty-eight thousand, four hundred seventy-five".