68622990 has 32 divisors (see below), whose sum is σ = 170376480. Its totient is φ = 17668224.

The previous prime is 68622949. The next prime is 68623013. The reversal of 68622990 is 9922686.

It is a super-2 number, since 2×68622990² = 9418229513080200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38569 + ... + 40308.

It is an arithmetic number, because the mean of its divisors is an integer number (5324265).

Almost surely, 2^68622990 is an apocalyptic number.

68622990 is an abundant number, since it is smaller than the sum of its proper divisors (101753490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68622990 is a wasteful number, since it uses less digits than its factorization.

68622990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78916.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 68622990 is about 8283.8994441024. The cubic root of 68622990 is about 409.4082082884.

The spelling of 68622990 in words is "sixty-eight million, six hundred twenty-two thousand, nine hundred ninety".