166420576 has 24 divisors (see below), whose sum is σ = 374446800. Its totient is φ = 71323008.

The previous prime is 166420567. The next prime is 166420603. The reversal of 166420576 is 675024661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371251 + ... + 371698.

It is an arithmetic number, because the mean of its divisors is an integer number (15601950).

Almost surely, 2^166420576 is an apocalyptic number.

166420576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166420576 is an abundant number, since it is smaller than the sum of its proper divisors (208026224).

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

166420576 is an equidigital number, since it uses as much as digits as its factorization.

166420576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742966 (or 742958 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 166420576 is about 12900.4099159678. The cubic root of 166420576 is about 550.0502169025.

The spelling of 166420576 in words is "one hundred sixty-six million, four hundred twenty thousand, five hundred seventy-six".