166663884 has 24 divisors (see below), whose sum is σ = 389496240. Its totient is φ = 55466944.

The previous prime is 166663883. The next prime is 166663933. The reversal of 166663884 is 488366661.

It is not an unprimeable number, because it can be changed into a prime (166663883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799 + ... + 18470.

It is an arithmetic number, because the mean of its divisors is an integer number (16229010).

Almost surely, 2^166663884 is an apocalyptic number.

It is an amenable number.

166663884 is an abundant number, since it is smaller than the sum of its proper divisors (222832356).

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

166663884 is a wasteful number, since it uses less digits than its factorization.

166663884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21929 (or 21927 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 166663884 is about 12909.8367146916. The cubic root of 166663884 is about 550.3181454111.

The spelling of 166663884 in words is "one hundred sixty-six million, six hundred sixty-three thousand, eight hundred eighty-four".