166653456 has 20 divisors (see below), whose sum is σ = 430521552. Its totient is φ = 55551136.

The previous prime is 166653451. The next prime is 166653481. The reversal of 166653456 is 654356661.

It is not an unprimeable number, because it can be changed into a prime (166653451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735926 + ... + 1736021.

Almost surely, 2^166653456 is an apocalyptic number.

166653456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166653456 is an abundant number, since it is smaller than the sum of its proper divisors (263868096).

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

166653456 is a wasteful number, since it uses less digits than its factorization.

166653456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471958 (or 3471952 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 166653456 is about 12909.4328302989. The cubic root of 166653456 is about 550.3066675448.

The spelling of 166653456 in words is "one hundred sixty-six million, six hundred fifty-three thousand, four hundred fifty-six".