687554560 has 240 divisors, whose sum is σ = 2076117120. Its totient is φ = 212336640.

The previous prime is 687554521. The next prime is 687554629. The reversal of 687554560 is 65455786.

It is a self number, because there is not a number n which added to its sum of digits gives 687554560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6307786 + ... + 6307894.

It is an arithmetic number, because the mean of its divisors is an integer number (8650488).

Almost surely, 2^687554560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687554560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038058560).

687554560 is an abundant number, since it is smaller than the sum of its proper divisors (1388562560).

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

687554560 is a wasteful number, since it uses less digits than its factorization.

687554560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 46.

The square root of 687554560 is about 26221.2616019901. The cubic root of 687554560 is about 882.6104305843.

The spelling of 687554560 in words is "six hundred eighty-seven million, five hundred fifty-four thousand, five hundred sixty".