659473961 has 2 divisors, whose sum is σ = 659473962. Its totient is φ = 659473960.

The previous prime is 659473957. The next prime is 659473973. The reversal of 659473961 is 169374956.

659473961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658435600 + 1038361 = 25660^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 659473961 - 2² = 659473957 is a prime.

It is not a weakly prime, because it can be changed into another prime (659473901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329736980 + 329736981.

It is an arithmetic number, because the mean of its divisors is an integer number (329736981).

Almost surely, 2^659473961 is an apocalyptic number.

It is an amenable number.

659473961 is a deficient number, since it is larger than the sum of its proper divisors (1).

659473961 is an equidigital number, since it uses as much as digits as its factorization.

659473961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 50.

The square root of 659473961 is about 25680.2250963655. The cubic root of 659473961 is about 870.4273942679.

The spelling of 659473961 in words is "six hundred fifty-nine million, four hundred seventy-three thousand, nine hundred sixty-one".