109681585 has 16 divisors (see below), whose sum is σ = 149204160. Its totient is φ = 76731840.

The previous prime is 109681573. The next prime is 109681609. The reversal of 109681585 is 585186901.

It is not a de Polignac number, because 109681585 - 2⁹ = 109681073 is a prime.

It is a super-2 number, since 2×109681585² = 24060100176224450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43171 + ... + 45640.

It is an arithmetic number, because the mean of its divisors is an integer number (9325260).

Almost surely, 2^109681585 is an apocalyptic number.

It is an amenable number.

109681585 is a deficient number, since it is larger than the sum of its proper divisors (39522575).

109681585 is a wasteful number, since it uses less digits than its factorization.

109681585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88848.

The product of its (nonzero) digits is 86400, while the sum is 43.

The square root of 109681585 is about 10472.8976410543. The cubic root of 109681585 is about 478.6792176985.

The spelling of 109681585 in words is "one hundred nine million, six hundred eighty-one thousand, five hundred eighty-five".