687050880 has 64 divisors (see below), whose sum is σ = 2189980800. Its totient is φ = 183213056.

The previous prime is 687050863. The next prime is 687050893. The reversal of 687050880 is 88050786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177000 + ... + 180839.

It is an arithmetic number, because the mean of its divisors is an integer number (34218450).

Almost surely, 2^687050880 is an apocalyptic number.

687050880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687050880 is an abundant number, since it is smaller than the sum of its proper divisors (1502929920).

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

687050880 is a wasteful number, since it uses less digits than its factorization.

687050880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357861 (or 357849 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 687050880 is about 26211.6554227313. The cubic root of 687050880 is about 882.3948540823.

The spelling of 687050880 in words is "six hundred eighty-seven million, fifty thousand, eight hundred eighty".