68816590 has 16 divisors (see below), whose sum is σ = 127866240. Its totient is φ = 26638560.

The previous prime is 68816569. The next prime is 68816609. The reversal of 68816590 is 9561886.

It is a congruent 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, 110685 + ... + 111304.

It is an arithmetic number, because the mean of its divisors is an integer number (7991640).

Almost surely, 2^68816590 is an apocalyptic number.

68816590 is a deficient number, since it is larger than the sum of its proper divisors (59049650).

68816590 is a wasteful number, since it uses less digits than its factorization.

68816590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222027.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 68816590 is about 8295.5765321043. The cubic root of 68816590 is about 409.7928559017.

The spelling of 68816590 in words is "sixty-eight million, eight hundred sixteen thousand, five hundred ninety".