166229866 has 8 divisors (see below), whose sum is σ = 272012544. Its totient is φ = 75559020.

The previous prime is 166229851. The next prime is 166229887. The reversal of 166229866 is 668922661.

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

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, 3777930 + ... + 3777973.

It is an arithmetic number, because the mean of its divisors is an integer number (34001568).

Almost surely, 2^166229866 is an apocalyptic number.

166229866 is a deficient number, since it is larger than the sum of its proper divisors (105782678).

166229866 is a wasteful number, since it uses less digits than its factorization.

166229866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555916.

The product of its digits is 373248, while the sum is 46.

The square root of 166229866 is about 12893.0161715558. The cubic root of 166229866 is about 549.8400262016.

It can be divided in two parts, 166 and 229866, that added together give a palindrome (230032).

The spelling of 166229866 in words is "one hundred sixty-six million, two hundred twenty-nine thousand, eight hundred sixty-six".