166408724 has 6 divisors (see below), whose sum is σ = 291215274. Its totient is φ = 83204360.

The previous prime is 166408691. The next prime is 166408727. The reversal of 166408724 is 427804661.

166408724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 69189124 = 9860^2 + 8318^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166408727) by changing a digit.

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, 20801087 + ... + 20801094.

It is an arithmetic number, because the mean of its divisors is an integer number (48535879).

Almost surely, 2^166408724 is an apocalyptic number.

It is an amenable number.

166408724 is a deficient number, since it is larger than the sum of its proper divisors (124806550).

166408724 is a wasteful number, since it uses less digits than its factorization.

166408724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41602185 (or 41602183 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 166408724 is about 12899.9505425409. The cubic root of 166408724 is about 550.0371589219.

The spelling of 166408724 in words is "one hundred sixty-six million, four hundred eight thousand, seven hundred twenty-four".