659985087 has 16 divisors (see below), whose sum is σ = 885265920. Its totient is φ = 437355552.

The previous prime is 659985061. The next prime is 659985143. The reversal of 659985087 is 780589956.

It is not a de Polignac number, because 659985087 - 2¹¹ = 659983039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659985037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661473 + ... + 662469.

It is an arithmetic number, because the mean of its divisors is an integer number (55329120).

Almost surely, 2^659985087 is an apocalyptic number.

659985087 is a deficient number, since it is larger than the sum of its proper divisors (225280833).

659985087 is a wasteful number, since it uses less digits than its factorization.

659985087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The square root of 659985087 is about 25690.1749118218. The cubic root of 659985087 is about 870.6522114244.

The spelling of 659985087 in words is "six hundred fifty-nine million, nine hundred eighty-five thousand, eighty-seven".