166556488 has 24 divisors (see below), whose sum is σ = 363280950. Its totient is φ = 71381184.

The previous prime is 166556431. The next prime is 166556513. The reversal of 166556488 is 884655661.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 27269284 = 11802^2 + 5222^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212053 + ... + 212836.

Almost surely, 2^166556488 is an apocalyptic number.

It is an amenable number.

166556488 is an abundant number, since it is smaller than the sum of its proper divisors (196724462).

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

166556488 is a wasteful number, since it uses less digits than its factorization.

166556488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424909 (or 424898 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 49.

The square root of 166556488 is about 12905.6765804819. The cubic root of 166556488 is about 550.1999141032.

The spelling of 166556488 in words is "one hundred sixty-six million, five hundred fifty-six thousand, four hundred eighty-eight".