206310690 has 48 divisors (see below), whose sum is σ = 559735488. Its totient is φ = 52623648.

The previous prime is 206310653. The next prime is 206310703. The reversal of 206310690 is 96013602.

It is a happy number.

206310690 is a `hidden beast` number, since 20 + 631 + 0 + 6 + 9 + 0 = 666.

It is a super-2 number, since 2×206310690² = 85128201616552200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47764 + ... + 51903.

It is an arithmetic number, because the mean of its divisors is an integer number (11661156).

Almost surely, 2^206310690 is an apocalyptic number.

206310690 is an abundant number, since it is smaller than the sum of its proper divisors (353424798).

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

206310690 is a wasteful number, since it uses less digits than its factorization.

206310690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99703 (or 99700 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 206310690 is about 14363.5194155193. The cubic root of 206310690 is about 590.8908213035.

The spelling of 206310690 in words is "two hundred six million, three hundred ten thousand, six hundred ninety".