687570132 has 12 divisors (see below), whose sum is σ = 1604330336. Its totient is φ = 229190040.

The previous prime is 687570131. The next prime is 687570133. The reversal of 687570132 is 231075786.

It is an interprime number because it is at equal distance from previous prime (687570131) and next prime (687570133).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687570131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28648744 + ... + 28648767.

Almost surely, 2^687570132 is an apocalyptic number.

It is an amenable number.

687570132 is an abundant number, since it is smaller than the sum of its proper divisors (916760204).

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

687570132 is a wasteful number, since it uses less digits than its factorization.

687570132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57297518 (or 57297516 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 687570132 is about 26221.5585349155. The cubic root of 687570132 is about 882.6170937674.

The spelling of 687570132 in words is "six hundred eighty-seven million, five hundred seventy thousand, one hundred thirty-two".