109621715 has 16 divisors (see below), whose sum is σ = 152585472. Its totient is φ = 74045664.

The previous prime is 109621667. The next prime is 109621723. The reversal of 109621715 is 517126901.

It is not a de Polignac number, because 109621715 - 2¹⁶ = 109556179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21029 + ... + 25718.

It is an arithmetic number, because the mean of its divisors is an integer number (9536592).

Almost surely, 2^109621715 is an apocalyptic number.

109621715 is a deficient number, since it is larger than the sum of its proper divisors (42963757).

109621715 is an equidigital number, since it uses as much as digits as its factorization.

109621715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46826.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 109621715 is about 10470.0389206535. The cubic root of 109621715 is about 478.5921057164.

The spelling of 109621715 in words is "one hundred nine million, six hundred twenty-one thousand, seven hundred fifteen".