166330404 has 18 divisors (see below), whose sum is σ = 420446390. Its totient is φ = 55443456.

The previous prime is 166330379. The next prime is 166330433. The reversal of 166330404 is 404033661.

166330404 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., 105021504 + 61308900 = 10248^2 + 7830^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×166330404³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2310109 + ... + 2310180.

Almost surely, 2^166330404 is an apocalyptic number.

It is an amenable number.

166330404 is an abundant number, since it is smaller than the sum of its proper divisors (254115986).

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

166330404 is a wasteful number, since it uses less digits than its factorization.

166330404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620299 (or 4620294 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 166330404 is about 12896.9145147202. The cubic root of 166330404 is about 549.9508540108.

The spelling of 166330404 in words is "one hundred sixty-six million, three hundred thirty thousand, four hundred four".