690691148188 has 24 divisors (see below), whose sum is σ = 1232064986544. Its totient is φ = 338705212800.

The previous prime is 690691148171. The next prime is 690691148227. The reversal of 690691148188 is 881841196096.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3994153 + ... + 4163488.

It is an arithmetic number, because the mean of its divisors is an integer number (51336041106).

Almost surely, 2^690691148188 is an apocalyptic number.

It is an amenable number.

690691148188 is a deficient number, since it is larger than the sum of its proper divisors (541373838356).

690691148188 is a wasteful number, since it uses less digits than its factorization.

690691148188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158053 (or 8158051 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 61.

The spelling of 690691148188 in words is "six hundred ninety billion, six hundred ninety-one million, one hundred forty-eight thousand, one hundred eighty-eight".