687133632 has 56 divisors (see below), whose sum is σ = 1913737600. Its totient is φ = 216988416.

The previous prime is 687133621. The next prime is 687133633. The reversal of 687133632 is 236331786.

It is a super-2 number, since 2×687133632² = 944305256451022848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687133633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90532 + ... + 97827.

Almost surely, 2^687133632 is an apocalyptic number.

It is an amenable number.

687133632 is an abundant number, since it is smaller than the sum of its proper divisors (1226603968).

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

687133632 is a wasteful number, since it uses less digits than its factorization.

687133632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188393 (or 188383 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 687133632 is about 26213.2339096114. The cubic root of 687133632 is about 882.4302794099.

The spelling of 687133632 in words is "six hundred eighty-seven million, one hundred thirty-three thousand, six hundred thirty-two".