687218880495 has 128 divisors (see below), whose sum is σ = 1281835376640. Its totient is φ = 307929600000.

The previous prime is 687218880487. The next prime is 687218880529. The reversal of 687218880495 is 594088812786.

It is not a de Polignac number, because 687218880495 - 2³ = 687218880487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 915071370 + ... + 915072120.

It is an arithmetic number, because the mean of its divisors is an integer number (10014338880).

Almost surely, 2^687218880495 is an apocalyptic number.

687218880495 is a deficient number, since it is larger than the sum of its proper divisors (594616496145).

687218880495 is a wasteful number, since it uses less digits than its factorization.

687218880495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577.

The product of its (nonzero) digits is 61931520, while the sum is 66.

The spelling of 687218880495 in words is "six hundred eighty-seven billion, two hundred eighteen million, eight hundred eighty thousand, four hundred ninety-five".