687874736 has 10 divisors (see below), whose sum is σ = 1332757332. Its totient is φ = 343937360.

The previous prime is 687874703. The next prime is 687874739. The reversal of 687874736 is 637478786.

It is not an unprimeable number, because it can be changed into a prime (687874739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21496070 + ... + 21496101.

Almost surely, 2^687874736 is an apocalyptic number.

It is an amenable number.

687874736 is a deficient number, since it is larger than the sum of its proper divisors (644882596).

687874736 is a wasteful number, since it uses less digits than its factorization.

687874736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42992179 (or 42992173 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 56.

The square root of 687874736 is about 26227.3661658963. The cubic root of 687874736 is about 882.7474121127.

The spelling of 687874736 in words is "six hundred eighty-seven million, eight hundred seventy-four thousand, seven hundred thirty-six".