166111066 has 16 divisors (see below), whose sum is σ = 277603200. Its totient is φ = 73898080.

The previous prime is 166111039. The next prime is 166111067. The reversal of 166111066 is 660111661.

166111066 = 3881² + 3882² + ... + 3891².

It is not an unprimeable number, because it can be changed into a prime (166111067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79291 + ... + 81358.

It is an arithmetic number, because the mean of its divisors is an integer number (17350200).

Almost surely, 2^166111066 is an apocalyptic number.

166111066 is a deficient number, since it is larger than the sum of its proper divisors (111492134).

166111066 is a wasteful number, since it uses less digits than its factorization.

166111066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160709.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 166111066 is about 12888.4082027223. The cubic root of 166111066 is about 549.7090097083.

The spelling of 166111066 in words is "one hundred sixty-six million, one hundred eleven thousand, sixty-six".