923668690 has 32 divisors (see below), whose sum is σ = 1902737664. Its totient is φ = 316249920.

The previous prime is 923668687. The next prime is 923668699. The reversal of 923668690 is 96866329.

It is a super-2 number, since 2×923668690² = 1706327697772632200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (923668699) 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, 44275 + ... + 61705.

It is an arithmetic number, because the mean of its divisors is an integer number (59460552).

Almost surely, 2^923668690 is an apocalyptic number.

923668690 is an abundant number, since it is smaller than the sum of its proper divisors (979068974).

923668690 is a wasteful number, since it uses less digits than its factorization.

923668690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18202.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 923668690 is about 30391.9181691449. The cubic root of 923668690 is about 973.8799111824.

The spelling of 923668690 in words is "nine hundred twenty-three million, six hundred sixty-eight thousand, six hundred ninety".