687114660 has 24 divisors (see below), whose sum is σ = 1923921216. Its totient is φ = 183230560.

The previous prime is 687114629. The next prime is 687114691. The reversal of 687114660 is 66411786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (687114629) and next prime (687114691).

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 7 ways as a sum of consecutive naturals, for example, 5725896 + ... + 5726015.

It is an arithmetic number, because the mean of its divisors is an integer number (80163384).

Almost surely, 2^687114660 is an apocalyptic number.

687114660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687114660 is an abundant number, since it is smaller than the sum of its proper divisors (1236806556).

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

687114660 is a wasteful number, since it uses less digits than its factorization.

687114660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451923 (or 11451921 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 687114660 is about 26212.8720288335. The cubic root of 687114660 is about 882.4221579322.

The spelling of 687114660 in words is "six hundred eighty-seven million, one hundred fourteen thousand, six hundred sixty".