166597147 has 2 divisors, whose sum is σ = 166597148. Its totient is φ = 166597146.

The previous prime is 166597099. The next prime is 166597157. The reversal of 166597147 is 741795661.

166597147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166597147 - 2¹⁵ = 166564379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166597097 and 166597106.

It is not a weakly prime, because it can be changed into another prime (166597157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83298573 + 83298574.

It is an arithmetic number, because the mean of its divisors is an integer number (83298574).

Almost surely, 2^166597147 is an apocalyptic number.

166597147 is a deficient number, since it is larger than the sum of its proper divisors (1).

166597147 is an equidigital number, since it uses as much as digits as its factorization.

166597147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 166597147 is about 12907.2517214161. The cubic root of 166597147 is about 550.2446812140.

The spelling of 166597147 in words is "one hundred sixty-six million, five hundred ninety-seven thousand, one hundred forty-seven".