166004690 has 16 divisors (see below), whose sum is σ = 308448000. Its totient is φ = 64259760.

The previous prime is 166004689. The next prime is 166004749. The reversal of 166004690 is 96400661.

166004690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166004690² = 55115114203992200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267440 + ... + 268059.

It is an arithmetic number, because the mean of its divisors is an integer number (19278000).

Almost surely, 2^166004690 is an apocalyptic number.

166004690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166004690 is a deficient number, since it is larger than the sum of its proper divisors (142443310).

166004690 is a wasteful number, since it uses less digits than its factorization.

166004690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535537.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 166004690 is about 12884.2807327379. The cubic root of 166004690 is about 549.5916417851.

The spelling of 166004690 in words is "one hundred sixty-six million, four thousand, six hundred ninety".