166471147 has 12 divisors (see below), whose sum is σ = 172877328. Its totient is φ = 160294800.

The previous prime is 166471139. The next prime is 166471163. The reversal of 166471147 is 741174661.

It is not a de Polignac number, because 166471147 - 2³ = 166471139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166475147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298593 + ... + 299149.

It is an arithmetic number, because the mean of its divisors is an integer number (14406444).

Almost surely, 2^166471147 is an apocalyptic number.

166471147 is a deficient number, since it is larger than the sum of its proper divisors (6406181).

166471147 is an equidigital number, since it uses as much as digits as its factorization.

166471147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 899 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 166471147 is about 12902.3698210833. The cubic root of 166471147 is about 550.1059267053.

The spelling of 166471147 in words is "one hundred sixty-six million, four hundred seventy-one thousand, one hundred forty-seven".