659840490870 has 32 divisors (see below), whose sum is σ = 1727582376960. Its totient is φ = 159961331040.

The previous prime is 659840490833. The next prime is 659840490889. The reversal of 659840490870 is 78094048956.

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, 999757990 + ... + 999758649.

It is an arithmetic number, because the mean of its divisors is an integer number (53986949280).

Almost surely, 2^659840490870 is an apocalyptic number.

659840490870 is an abundant number, since it is smaller than the sum of its proper divisors (1067741886090).

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

659840490870 is a wasteful number, since it uses less digits than its factorization.

659840490870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999516660.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 659840490870 in words is "six hundred fifty-nine billion, eight hundred forty million, four hundred ninety thousand, eight hundred seventy".