13609775 has 24 divisors (see below), whose sum is σ = 18463104. Its totient is φ = 9907200.

The previous prime is 13609769. The next prime is 13609789. The reversal of 13609775 is 57790631.

It is a de Polignac number, because none of the positive numbers 2^k-13609775 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12659 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (769296).

Almost surely, 2^13609775 is an apocalyptic number.

13609775 is a deficient number, since it is larger than the sum of its proper divisors (4853329).

13609775 is a wasteful number, since it uses less digits than its factorization.

13609775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 13609775 is about 3689.1428543769. The cubic root of 13609775 is about 238.7538124260.

The spelling of 13609775 in words is "thirteen million, six hundred nine thousand, seven hundred seventy-five".