690087257904 has 320 divisors, whose sum is σ = 2080594833408. Its totient is φ = 194782003200.

The previous prime is 690087257903. The next prime is 690087257911. The reversal of 690087257904 is 409752780096.

It is not an unprimeable number, because it can be changed into a prime (690087257903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 378543937 + ... + 378545759.

Almost surely, 2^690087257904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690087257904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040297416704).

690087257904 is an abundant number, since it is smaller than the sum of its proper divisors (1390507575504).

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

690087257904 is a wasteful number, since it uses less digits than its factorization.

690087257904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 690087257904 in words is "six hundred ninety billion, eighty-seven million, two hundred fifty-seven thousand, nine hundred four".