687488008 has 8 divisors (see below), whose sum is σ = 1289040030. Its totient is φ = 343744000.

The previous prime is 687487981. The next prime is 687488029. The reversal of 687488008 is 800884786.

It can be written as a sum of positive squares in only one way, i.e., 588644644 + 98843364 = 24262^2 + 9942^2 .

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

It is a super-2 number, since 2×687488008² = 945279522287616128, 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 as a sum of consecutive naturals, namely, 42967993 + ... + 42968008.

Almost surely, 2^687488008 is an apocalyptic number.

It is an amenable number.

687488008 is a deficient number, since it is larger than the sum of its proper divisors (601552022).

687488008 is a wasteful number, since it uses less digits than its factorization.

687488008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85936007 (or 85936003 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

The square root of 687488008 is about 26219.9925247892. The cubic root of 687488008 is about 882.5819521729.

The spelling of 687488008 in words is "six hundred eighty-seven million, four hundred eighty-eight thousand, eight".