166723020 has 36 divisors (see below), whose sum is σ = 505727040. Its totient is φ = 44459424.

The previous prime is 166723019. The next prime is 166723031. The reversal of 166723020 is 20327661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462940 + ... + 463299.

Almost surely, 2^166723020 is an apocalyptic number.

166723020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166723020 is an abundant number, since it is smaller than the sum of its proper divisors (339004020).

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

166723020 is a wasteful number, since it uses less digits than its factorization.

166723020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926254 (or 926249 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 166723020 is about 12912.1268581129. The cubic root of 166723020 is about 550.3832260288.

The spelling of 166723020 in words is "one hundred sixty-six million, seven hundred twenty-three thousand, twenty".