166741864 has 8 divisors (see below), whose sum is σ = 312641010. Its totient is φ = 83370928.

The previous prime is 166741829. The next prime is 166741873. The reversal of 166741864 is 468147661.

It can be written as a sum of positive squares in only one way, i.e., 133217764 + 33524100 = 11542^2 + 5790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 166741864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10421359 + ... + 10421374.

Almost surely, 2^166741864 is an apocalyptic number.

It is an amenable number.

166741864 is a deficient number, since it is larger than the sum of its proper divisors (145899146).

166741864 is a wasteful number, since it uses less digits than its factorization.

166741864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20842739 (or 20842735 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 166741864 is about 12912.8565391241. The cubic root of 166741864 is about 550.4039610794.

The spelling of 166741864 in words is "one hundred sixty-six million, seven hundred forty-one thousand, eight hundred sixty-four".