109972666 has 8 divisors (see below), whose sum is σ = 166218624. Its totient is φ = 54566460.

The previous prime is 109972663. The next prime is 109972693. The reversal of 109972666 is 666279901.

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

It is not an unprimeable number, because it can be changed into a prime (109972663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209610 + ... + 210133.

It is an arithmetic number, because the mean of its divisors is an integer number (20777328).

Almost surely, 2^109972666 is an apocalyptic number.

109972666 is a deficient number, since it is larger than the sum of its proper divisors (56245958).

109972666 is a wasteful number, since it uses less digits than its factorization.

109972666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419876.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 109972666 is about 10486.7853034188. The cubic root of 109972666 is about 479.1022949426.

The spelling of 109972666 in words is "one hundred nine million, nine hundred seventy-two thousand, six hundred sixty-six".