166901027 has 2 divisors, whose sum is σ = 166901028. Its totient is φ = 166901026.

The previous prime is 166900999. The next prime is 166901051. The reversal of 166901027 is 720109661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166901027 - 2²⁰ = 165852451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166900984 and 166901002.

It is not a weakly prime, because it can be changed into another prime (166901057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83450513 + 83450514.

It is an arithmetic number, because the mean of its divisors is an integer number (83450514).

Almost surely, 2^166901027 is an apocalyptic number.

166901027 is a deficient number, since it is larger than the sum of its proper divisors (1).

166901027 is an equidigital number, since it uses as much as digits as its factorization.

166901027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 166901027 is about 12919.0180354391. The cubic root of 166901027 is about 550.5790342620.

The spelling of 166901027 in words is "one hundred sixty-six million, nine hundred one thousand, twenty-seven".