690645575841 has 32 divisors (see below), whose sum is σ = 1006641205248. Its totient is φ = 418609477440.

The previous prime is 690645575839. The next prime is 690645575857. The reversal of 690645575841 is 148575546096.

It is not a de Polignac number, because 690645575841 - 2¹ = 690645575839 is a prime.

It is a super-2 number, since 2×690645575841² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690645575801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24315450 + ... + 24343836.

It is an arithmetic number, because the mean of its divisors is an integer number (31457537664).

Almost surely, 2^690645575841 is an apocalyptic number.

It is an amenable number.

690645575841 is a deficient number, since it is larger than the sum of its proper divisors (315995629407).

690645575841 is a wasteful number, since it uses less digits than its factorization.

690645575841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37781.

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 690645575841 in words is "six hundred ninety billion, six hundred forty-five million, five hundred seventy-five thousand, eight hundred forty-one".