690686894196 has 72 divisors (see below), whose sum is σ = 1882148812544. Its totient is φ = 212299133760.

The previous prime is 690686894153. The next prime is 690686894213. The reversal of 690686894196 is 691498686096.

690686894196 is a `hidden beast` number, since 6 + 90 + 68 + 68 + 9 + 419 + 6 = 666.

It is a congruent number.

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, 310540 + ... + 1215651.

Almost surely, 2^690686894196 is an apocalyptic number.

It is an amenable number.

690686894196 is an abundant number, since it is smaller than the sum of its proper divisors (1191461918348).

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

690686894196 is a wasteful number, since it uses less digits than its factorization.

690686894196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527181 (or 1527176 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 72.

The spelling of 690686894196 in words is "six hundred ninety billion, six hundred eighty-six million, eight hundred ninety-four thousand, one hundred ninety-six".