166000657 has 2 divisors, whose sum is σ = 166000658. Its totient is φ = 166000656.

The previous prime is 166000649. The next prime is 166000661. The reversal of 166000657 is 756000661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99920016 + 66080641 = 9996^2 + 8129^2 .

It is a cyclic number.

It is not a de Polignac number, because 166000657 - 2³ = 166000649 is a prime.

It is equal to p_9291712 and since 166000657 and 9291712 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (166000687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83000328 + 83000329.

It is an arithmetic number, because the mean of its divisors is an integer number (83000329).

Almost surely, 2^166000657 is an apocalyptic number.

It is an amenable number.

166000657 is a deficient number, since it is larger than the sum of its proper divisors (1).

166000657 is an equidigital number, since it uses as much as digits as its factorization.

166000657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 166000657 is about 12884.1242232447. The cubic root of 166000657 is about 549.5871910654.

The spelling of 166000657 in words is "one hundred sixty-six million, six hundred fifty-seven", and thus it is an aban number.