166004739 has 12 divisors (see below), whose sum is σ = 240095856. Its totient is φ = 110526192.

The previous prime is 166004689. The next prime is 166004749. The reversal of 166004739 is 937400661.

166004739 is a `hidden beast` number, since 1 + 6 + 600 + 47 + 3 + 9 = 666.

It is not a de Polignac number, because 166004739 - 2¹³ = 165996547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166004749) 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, 4399 + ... + 18744.

It is an arithmetic number, because the mean of its divisors is an integer number (20007988).

Almost surely, 2^166004739 is an apocalyptic number.

166004739 is a deficient number, since it is larger than the sum of its proper divisors (74091117).

166004739 is a wasteful number, since it uses less digits than its factorization.

166004739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23946 (or 23943 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 166004739 is about 12884.2826342796. The cubic root of 166004739 is about 549.5916958599.

The spelling of 166004739 in words is "one hundred sixty-six million, four thousand, seven hundred thirty-nine".