690623792 has 20 divisors (see below), whose sum is σ = 1360764840. Its totient is φ = 339458688.

The previous prime is 690623753. The next prime is 690623807. The reversal of 690623792 is 297326096.

It is a super-2 number, since 2×690623792² = 953922444152918528, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364853 + ... + 366740.

It is an arithmetic number, because the mean of its divisors is an integer number (68038242).

Almost surely, 2^690623792 is an apocalyptic number.

It is an amenable number.

690623792 is a deficient number, since it is larger than the sum of its proper divisors (670141048).

690623792 is a wasteful number, since it uses less digits than its factorization.

690623792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731660 (or 731654 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 690623792 is about 26279.7220685455. The cubic root of 690623792 is about 883.9218005804.

The spelling of 690623792 in words is "six hundred ninety million, six hundred twenty-three thousand, seven hundred ninety-two".