690492380688 has 360 divisors, whose sum is σ = 2336794739136. Its totient is φ = 188366745600.

The previous prime is 690492380659. The next prime is 690492380707. The reversal of 690492380688 is 886083294096.

690492380688 is a `hidden beast` number, since 6 + 9 + 0 + 492 + 3 + 80 + 68 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10496058 + ... + 10561638.

Almost surely, 2^690492380688 is an apocalyptic number.

690492380688 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690492380688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168397369568).

690492380688 is an abundant number, since it is smaller than the sum of its proper divisors (1646302358448).

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

690492380688 is a wasteful number, since it uses less digits than its factorization.

690492380688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65663 (or 65637 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 690492380688 in words is "six hundred ninety billion, four hundred ninety-two million, three hundred eighty thousand, six hundred eighty-eight".