687537896 has 16 divisors (see below), whose sum is σ = 1345183200. Its totient is φ = 328822384.

The previous prime is 687537863. The next prime is 687537973. The reversal of 687537896 is 698735786.

It is a super-2 number, since 2×687537896² = 945416716872213632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868126 + ... + 1868493.

It is an arithmetic number, because the mean of its divisors is an integer number (84073950).

Almost surely, 2^687537896 is an apocalyptic number.

It is an amenable number.

687537896 is a deficient number, since it is larger than the sum of its proper divisors (657645304).

687537896 is a wasteful number, since it uses less digits than its factorization.

687537896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736648 (or 3736644 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 59.

The square root of 687537896 is about 26220.9438426613. The cubic root of 687537896 is about 882.6033000282.

The spelling of 687537896 in words is "six hundred eighty-seven million, five hundred thirty-seven thousand, eight hundred ninety-six".