109172665 has 8 divisors (see below), whose sum is σ = 149722560. Its totient is φ = 74861232.

The previous prime is 109172659. The next prime is 109172671. The reversal of 109172665 is 566271901.

It is an interprime number because it is at equal distance from previous prime (109172659) and next prime (109172671).

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

It is a cyclic number.

It is not a de Polignac number, because 109172665 - 2¹⁵ = 109139897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559575 + ... + 1559644.

It is an arithmetic number, because the mean of its divisors is an integer number (18715320).

Almost surely, 2^109172665 is an apocalyptic number.

It is an amenable number.

109172665 is a deficient number, since it is larger than the sum of its proper divisors (40549895).

109172665 is an equidigital number, since it uses as much as digits as its factorization.

109172665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119231.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 109172665 is about 10448.5723905230. The cubic root of 109172665 is about 477.9377161893.

The spelling of 109172665 in words is "one hundred nine million, one hundred seventy-two thousand, six hundred sixty-five".