166563356 has 48 divisors (see below), whose sum is σ = 309687840. Its totient is φ = 78274560.

The previous prime is 166563311. The next prime is 166563413. The reversal of 166563356 is 653365661.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271411 + ... + 1271541.

It is an arithmetic number, because the mean of its divisors is an integer number (6451830).

Almost surely, 2^166563356 is an apocalyptic number.

It is an amenable number.

166563356 is a deficient number, since it is larger than the sum of its proper divisors (143124484).

166563356 is a wasteful number, since it uses less digits than its factorization.

166563356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 372 counting only the distinct ones).

The product of its digits is 291600, while the sum is 41.

The square root of 166563356 is about 12905.9426622002. The cubic root of 166563356 is about 550.2074765447.

The spelling of 166563356 in words is "one hundred sixty-six million, five hundred sixty-three thousand, three hundred fifty-six".