687182660380 has 24 divisors (see below), whose sum is σ = 1443110553360. Its totient is φ = 274867927680.

The previous prime is 687182660377. The next prime is 687182660399. The reversal of 687182660380 is 83066281786.

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, 886851 + ... + 1469989.

It is an arithmetic number, because the mean of its divisors is an integer number (60129606390).

Almost surely, 2^687182660380 is an apocalyptic number.

It is an amenable number.

687182660380 is an abundant number, since it is smaller than the sum of its proper divisors (755927892980).

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

687182660380 is a wasteful number, since it uses less digits than its factorization.

687182660380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642069 (or 642067 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 687182660380 in words is "six hundred eighty-seven billion, one hundred eighty-two million, six hundred sixty thousand, three hundred eighty".