68408590 has 16 divisors (see below), whose sum is σ = 123312960. Its totient is φ = 27324000.

The previous prime is 68408551. The next prime is 68408611. The reversal of 68408590 is 9580486.

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, 2956 + ... + 12064.

It is an arithmetic number, because the mean of its divisors is an integer number (7707060).

Almost surely, 2^68408590 is an apocalyptic number.

68408590 is a deficient number, since it is larger than the sum of its proper divisors (54904370).

68408590 is a wasteful number, since it uses less digits than its factorization.

68408590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 68408590 is about 8270.9485550329. The cubic root of 68408590 is about 408.9813897475.

The spelling of 68408590 in words is "sixty-eight million, four hundred eight thousand, five hundred ninety".