691383432 has 32 divisors (see below), whose sum is σ = 1788062400. Its totient is φ = 222513984.

The previous prime is 691383397. The next prime is 691383449. The reversal of 691383432 is 234383196.

It is a super-2 number, since 2×691383432² = 956022100088197248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495988 + ... + 497379.

It is an arithmetic number, because the mean of its divisors is an integer number (55876950).

Almost surely, 2^691383432 is an apocalyptic number.

It is an amenable number.

691383432 is an abundant number, since it is smaller than the sum of its proper divisors (1096678968).

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

691383432 is a wasteful number, since it uses less digits than its factorization.

691383432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993405 (or 993401 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 691383432 is about 26294.1710650859. The cubic root of 691383432 is about 884.2457667912.

The spelling of 691383432 in words is "six hundred ninety-one million, three hundred eighty-three thousand, four hundred thirty-two".