687369264 has 80 divisors (see below), whose sum is σ = 1837215744. Its totient is φ = 221299200.

The previous prime is 687369259. The next prime is 687369301. The reversal of 687369264 is 462963786.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 201009 + ... + 204399.

Almost surely, 2^687369264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687369264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918607872).

687369264 is an abundant number, since it is smaller than the sum of its proper divisors (1149846480).

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

687369264 is a wasteful number, since it uses less digits than its factorization.

687369264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546 (or 3540 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 687369264 is about 26217.7280480212. The cubic root of 687369264 is about 882.5311356038.

The spelling of 687369264 in words is "six hundred eighty-seven million, three hundred sixty-nine thousand, two hundred sixty-four".