690512832 has 84 divisors (see below), whose sum is σ = 2016663480. Its totient is φ = 225818112.

The previous prime is 690512803. The next prime is 690512869. The reversal of 690512832 is 238215096.

690512832 is a `hidden beast` number, since 69 + 0 + 512 + 83 + 2 = 666.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19219 + ... + 41837.

Almost surely, 2^690512832 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 690512832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008331740).

690512832 is an abundant number, since it is smaller than the sum of its proper divisors (1326150648).

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

690512832 is a wasteful number, since it uses less digits than its factorization.

690512832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690 (or 22677 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 690512832 is about 26277.6108503037. The cubic root of 690512832 is about 883.8744592168.

The spelling of 690512832 in words is "six hundred ninety million, five hundred twelve thousand, eight hundred thirty-two".