690604775973 has 24 divisors (see below), whose sum is σ = 1148748634176. Its totient is φ = 391618843200.

The previous prime is 690604775929. The next prime is 690604775977. The reversal of 690604775973 is 379577406096.

690604775973 is a `hidden beast` number, since 6 + 90 + 6 + 0 + 477 + 5 + 9 + 73 = 666.

It is not a de Polignac number, because 690604775973 - 2¹⁶ = 690604710437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 690604775973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690604775977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41831368 + ... + 41847873.

It is an arithmetic number, because the mean of its divisors is an integer number (47864526424).

Almost surely, 2^690604775973 is an apocalyptic number.

690604775973 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

690604775973 is a deficient number, since it is larger than the sum of its proper divisors (458143858203).

690604775973 is a wasteful number, since it uses less digits than its factorization.

690604775973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83679385 (or 83679382 counting only the distinct ones).

The product of its (nonzero) digits is 60011280, while the sum is 63.

The spelling of 690604775973 in words is "six hundred ninety billion, six hundred four million, seven hundred seventy-five thousand, nine hundred seventy-three".