659310961 has 4 divisors (see below), whose sum is σ = 668342692. Its totient is φ = 650279232.

The previous prime is 659310943. The next prime is 659310973. The reversal of 659310961 is 169013956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 460359936 + 198951025 = 21456^2 + 14105^2 .

It is a cyclic number.

It is not a de Polignac number, because 659310961 - 2⁵ = 659310929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659310901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515756 + ... + 4515901.

It is an arithmetic number, because the mean of its divisors is an integer number (167085673).

Almost surely, 2^659310961 is an apocalyptic number.

It is an amenable number.

659310961 is a deficient number, since it is larger than the sum of its proper divisors (9031731).

659310961 is an equidigital number, since it uses as much as digits as its factorization.

659310961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031730.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 659310961 is about 25677.0512520422. The cubic root of 659310961 is about 870.3556748043.

The spelling of 659310961 in words is "six hundred fifty-nine million, three hundred ten thousand, nine hundred sixty-one".