690700608 has 280 divisors, whose sum is σ = 2272717832. Its totient is φ = 206032896.

The previous prime is 690700589. The next prime is 690700613. The reversal of 690700608 is 806007096.

It can be written as a sum of positive squares in 4 ways, for example, as 41062464 + 649638144 = 6408^2 + 25488^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2493366 + ... + 2493642.

Almost surely, 2^690700608 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 690700608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136358916).

690700608 is an abundant number, since it is smaller than the sum of its proper divisors (1582017224).

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

690700608 is a wasteful number, since it uses less digits than its factorization.

690700608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 690700608 is about 26281.1835349932. The cubic root of 690700608 is about 883.9545713501.

The spelling of 690700608 in words is "six hundred ninety million, seven hundred thousand, six hundred eight".