166004740 has 36 divisors (see below), whose sum is σ = 383188428. Its totient is φ = 60364480.

The previous prime is 166004689. The next prime is 166004749. The reversal of 166004740 is 47400661.

It can be written as a sum of positive squares in 2 ways, for example, as 37136836 + 128867904 = 6094^2 + 11352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166004699 and 166004708.

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, 31879 + ... + 36718.

It is an arithmetic number, because the mean of its divisors is an integer number (10644123).

Almost surely, 2^166004740 is an apocalyptic number.

166004740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166004740 is an abundant number, since it is smaller than the sum of its proper divisors (217183688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166004740 is a wasteful number, since it uses less digits than its factorization.

166004740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68628 (or 68615 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 166004740 is about 12884.2826730866. The cubic root of 166004740 is about 549.5916969634.

The spelling of 166004740 in words is "one hundred sixty-six million, four thousand, seven hundred forty".