687922132 has 24 divisors (see below), whose sum is σ = 1288007840. Its totient is φ = 320513760.

The previous prime is 687922099. The next prime is 687922133. The reversal of 687922132 is 231229786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687922133) by changing a digit.

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, 69558 + ... + 78829.

Almost surely, 2^687922132 is an apocalyptic number.

It is an amenable number.

687922132 is a deficient number, since it is larger than the sum of its proper divisors (600085708).

687922132 is a wasteful number, since it uses less digits than its factorization.

687922132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148471 (or 148469 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 687922132 is about 26228.2697103717. The cubic root of 687922132 is about 882.7676860246.

The spelling of 687922132 in words is "six hundred eighty-seven million, nine hundred twenty-two thousand, one hundred thirty-two".