109664597 has 6 divisors (see below), whose sum is σ = 127569078. Its totient is φ = 93998184.

The previous prime is 109664593. The next prime is 109664609. The reversal of 109664597 is 795466901.

It can be written as a sum of positive squares in only one way, i.e., 73170916 + 36493681 = 8554^2 + 6041^2 .

It is not a de Polignac number, because 109664597 - 2² = 109664593 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109664591) 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 5 ways as a sum of consecutive naturals, for example, 1118978 + ... + 1119075.

It is an arithmetic number, because the mean of its divisors is an integer number (21261513).

Almost surely, 2^109664597 is an apocalyptic number.

It is an amenable number.

109664597 is a deficient number, since it is larger than the sum of its proper divisors (17904481).

109664597 is an equidigital number, since it uses as much as digits as its factorization.

109664597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238067 (or 2238060 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 109664597 is about 10472.0865638133. The cubic root of 109664597 is about 478.6545030592.

The spelling of 109664597 in words is "one hundred nine million, six hundred sixty-four thousand, five hundred ninety-seven".