687355480 has 32 divisors (see below), whose sum is σ = 1767486240. Its totient is φ = 235664640.

The previous prime is 687355433. The next prime is 687355507. The reversal of 687355480 is 84553786.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 687355480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227141 + ... + 1227700.

It is an arithmetic number, because the mean of its divisors is an integer number (55233945).

Almost surely, 2^687355480 is an apocalyptic number.

It is an amenable number.

687355480 is an abundant number, since it is smaller than the sum of its proper divisors (1080130760).

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

687355480 is a wasteful number, since it uses less digits than its factorization.

687355480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454859 (or 2454855 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 687355480 is about 26217.4651711412. The cubic root of 687355480 is about 882.5252363532.

The spelling of 687355480 in words is "six hundred eighty-seven million, three hundred fifty-five thousand, four hundred eighty".