687670796 has 12 divisors (see below), whose sum is σ = 1203617520. Its totient is φ = 343780080.

The previous prime is 687670777. The next prime is 687670829. The reversal of 687670796 is 697076786.

It is a super-2 number, since 2×687670796² = 945782247342547232, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 28610 + ... + 46838.

It is an arithmetic number, because the mean of its divisors is an integer number (100301460).

Almost surely, 2^687670796 is an apocalyptic number.

It is an amenable number.

687670796 is a deficient number, since it is larger than the sum of its proper divisors (515946724).

687670796 is a wasteful number, since it uses less digits than its factorization.

687670796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27664 (or 27662 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 56.

The square root of 687670796 is about 26223.4779539252. The cubic root of 687670796 is about 882.6601649769.

The spelling of 687670796 in words is "six hundred eighty-seven million, six hundred seventy thousand, seven hundred ninety-six".