68511458 has 16 divisors (see below), whose sum is σ = 104120640. Its totient is φ = 33807216.

The previous prime is 68511419. The next prime is 68511461. The reversal of 68511458 is 85411586.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82835 + ... + 83657.

It is an arithmetic number, because the mean of its divisors is an integer number (6507540).

Almost surely, 2^68511458 is an apocalyptic number.

68511458 is a deficient number, since it is larger than the sum of its proper divisors (35609182).

68511458 is a wasteful number, since it uses less digits than its factorization.

68511458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321.

The product of its digits is 38400, while the sum is 38.

The square root of 68511458 is about 8277.1648527742. The cubic root of 68511458 is about 409.1862861762.

The spelling of 68511458 in words is "sixty-eight million, five hundred eleven thousand, four hundred fifty-eight".