690259960 has 64 divisors (see below), whose sum is σ = 1685486880. Its totient is φ = 252894720.

The previous prime is 690259903. The next prime is 690259967. The reversal of 690259960 is 69952096.

It is a self number, because there is not a number n which added to its sum of digits gives 690259960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690259967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63054 + ... + 73186.

Almost surely, 2^690259960 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 690259960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842743440).

690259960 is an abundant number, since it is smaller than the sum of its proper divisors (995226920).

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

690259960 is a wasteful number, since it uses less digits than its factorization.

690259960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10288 (or 10284 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 690259960 is about 26272.7988611796. The cubic root of 690259960 is about 883.7665517887.

The spelling of 690259960 in words is "six hundred ninety million, two hundred fifty-nine thousand, nine hundred sixty".