687754696 has 8 divisors (see below), whose sum is σ = 1289540070. Its totient is φ = 343877344.

The previous prime is 687754667. The next prime is 687754741. The reversal of 687754696 is 696457786.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 659770596 + 27984100 = 25686^2 + 5290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 687754696.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42984661 + ... + 42984676.

Almost surely, 2^687754696 is an apocalyptic number.

It is an amenable number.

687754696 is a deficient number, since it is larger than the sum of its proper divisors (601785374).

687754696 is a wasteful number, since it uses less digits than its factorization.

687754696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85969343 (or 85969339 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 58.

The square root of 687754696 is about 26225.0776166630. The cubic root of 687754696 is about 882.6960601449.

The spelling of 687754696 in words is "six hundred eighty-seven million, seven hundred fifty-four thousand, six hundred ninety-six".