68515628 has 12 divisors (see below), whose sum is σ = 120062880. Its totient is φ = 34211952.

The previous prime is 68515621. The next prime is 68515679. The reversal of 68515628 is 82651586.

It is not an unprimeable number, because it can be changed into a prime (68515621) 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 3 ways as a sum of consecutive naturals, for example, 7988 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (10005240).

Almost surely, 2^68515628 is an apocalyptic number.

It is an amenable number.

68515628 is a deficient number, since it is larger than the sum of its proper divisors (51547252).

68515628 is a wasteful number, since it uses less digits than its factorization.

68515628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22936 (or 22934 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 68515628 is about 8277.4167467876. The cubic root of 68515628 is about 409.1945878153.

The spelling of 68515628 in words is "sixty-eight million, five hundred fifteen thousand, six hundred twenty-eight".