68912590 has 32 divisors (see below), whose sum is σ = 126904320. Its totient is φ = 26935200.

The previous prime is 68912587. The next prime is 68912593. The reversal of 68912590 is 9521986.

It is an interprime number because it is at equal distance from previous prime (68912587) and next prime (68912593).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68912593) 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 15 ways as a sum of consecutive naturals, for example, 159675 + ... + 160105.

It is an arithmetic number, because the mean of its divisors is an integer number (3965760).

Almost surely, 2^68912590 is an apocalyptic number.

68912590 is a deficient number, since it is larger than the sum of its proper divisors (57991730).

68912590 is a wasteful number, since it uses less digits than its factorization.

68912590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 68912590 is about 8301.3607318319. The cubic root of 68912590 is about 409.9833227402.

The spelling of 68912590 in words is "sixty-eight million, nine hundred twelve thousand, five hundred ninety".