166264001 has 2 divisors, whose sum is σ = 166264002. Its totient is φ = 166264000.

The previous prime is 166263973. The next prime is 166264013. The reversal of 166264001 is 100462661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164454976 + 1809025 = 12824^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 166264001 - 2²² = 162069697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166264081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83132000 + 83132001.

It is an arithmetic number, because the mean of its divisors is an integer number (83132001).

Almost surely, 2^166264001 is an apocalyptic number.

It is an amenable number.

166264001 is a deficient number, since it is larger than the sum of its proper divisors (1).

166264001 is an equidigital number, since it uses as much as digits as its factorization.

166264001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 166264001 is about 12894.3398822894. The cubic root of 166264001 is about 549.8776598414.

The spelling of 166264001 in words is "one hundred sixty-six million, two hundred sixty-four thousand, one".