166356097 has 2 divisors, whose sum is σ = 166356098. Its totient is φ = 166356096.

The previous prime is 166356083. The next prime is 166356103. The reversal of 166356097 is 790653661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99181681 + 67174416 = 9959^2 + 8196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166356097 is a prime.

It is not a weakly prime, because it can be changed into another prime (166356017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83178048 + 83178049.

It is an arithmetic number, because the mean of its divisors is an integer number (83178049).

Almost surely, 2^166356097 is an apocalyptic number.

It is an amenable number.

166356097 is a deficient number, since it is larger than the sum of its proper divisors (1).

166356097 is an equidigital number, since it uses as much as digits as its factorization.

166356097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 166356097 is about 12897.9105672198. The cubic root of 166356097 is about 549.9791694590.

The spelling of 166356097 in words is "one hundred sixty-six million, three hundred fifty-six thousand, ninety-seven".