687085687590 has 64 divisors (see below), whose sum is σ = 1752981661440. Its totient is φ = 171860918400.

The previous prime is 687085687577. The next prime is 687085687591. The reversal of 687085687590 is 95786580786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687085687591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5909824 + ... + 6024963.

It is an arithmetic number, because the mean of its divisors is an integer number (27390338460).

Almost surely, 2^687085687590 is an apocalyptic number.

687085687590 is an abundant number, since it is smaller than the sum of its proper divisors (1065895973850).

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

687085687590 is a wasteful number, since it uses less digits than its factorization.

687085687590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11934917.

The product of its (nonzero) digits is 203212800, while the sum is 69.

The spelling of 687085687590 in words is "six hundred eighty-seven billion, eighty-five million, six hundred eighty-seven thousand, five hundred ninety".