687397008 has 40 divisors (see below), whose sum is σ = 1800795456. Its totient is φ = 225904000.

The previous prime is 687397003. The next prime is 687397013. The reversal of 687397008 is 800793786.

It is an interprime number because it is at equal distance from previous prime (687397003) and next prime (687397013).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (687397001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 97443 + ... + 104258.

Almost surely, 2^687397008 is an apocalyptic number.

It is an amenable number.

687397008 is an abundant number, since it is smaller than the sum of its proper divisors (1113398448).

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

687397008 is a wasteful number, since it uses less digits than its factorization.

687397008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201783 (or 201777 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 687397008 is about 26218.2571503142. The cubic root of 687397008 is about 882.5430091899.

The spelling of 687397008 in words is "six hundred eighty-seven million, three hundred ninety-seven thousand, eight".