659913261 has 16 divisors (see below), whose sum is σ = 1010354688. Its totient is φ = 375303600.

The previous prime is 659913227. The next prime is 659913283. The reversal of 659913261 is 162319956.

It is not a de Polignac number, because 659913261 - 2²² = 655718957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659913061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70035 + ... + 78896.

It is an arithmetic number, because the mean of its divisors is an integer number (63147168).

Almost surely, 2^659913261 is an apocalyptic number.

It is an amenable number.

659913261 is a deficient number, since it is larger than the sum of its proper divisors (350441427).

659913261 is a wasteful number, since it uses less digits than its factorization.

659913261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149152.

The product of its digits is 87480, while the sum is 42.

The square root of 659913261 is about 25688.7769463632. The cubic root of 659913261 is about 870.6206259964.

The spelling of 659913261 in words is "six hundred fifty-nine million, nine hundred thirteen thousand, two hundred sixty-one".