166556486 has 8 divisors (see below), whose sum is σ = 253353744. Its totient is φ = 82105240.

The previous prime is 166556431. The next prime is 166556513. The reversal of 166556486 is 684655661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166556486.

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, 586325 + ... + 586608.

It is an arithmetic number, because the mean of its divisors is an integer number (31669218).

Almost surely, 2^166556486 is an apocalyptic number.

166556486 is a deficient number, since it is larger than the sum of its proper divisors (86797258).

166556486 is a wasteful number, since it uses less digits than its factorization.

166556486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173006.

The product of its digits is 1036800, while the sum is 47.

The square root of 166556486 is about 12905.6765029967. The cubic root of 166556486 is about 550.1999119010.

The spelling of 166556486 in words is "one hundred sixty-six million, five hundred fifty-six thousand, four hundred eighty-six".