166870724 has 12 divisors (see below), whose sum is σ = 292309500. Its totient is φ = 83353728.

The previous prime is 166870721. The next prime is 166870733. The reversal of 166870724 is 427078661.

It can be written as a sum of positive squares in 2 ways, for example, as 89113600 + 77757124 = 9440^2 + 8818^2 .

It is not an unprimeable number, because it can be changed into a prime (166870721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15689 + ... + 24080.

It is an arithmetic number, because the mean of its divisors is an integer number (24359125).

Almost surely, 2^166870724 is an apocalyptic number.

It is an amenable number.

166870724 is a deficient number, since it is larger than the sum of its proper divisors (125438776).

166870724 is a wasteful number, since it uses less digits than its factorization.

166870724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40822 (or 40820 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 166870724 is about 12917.8451763442. The cubic root of 166870724 is about 550.5457107077.

The spelling of 166870724 in words is "one hundred sixty-six million, eight hundred seventy thousand, seven hundred twenty-four".