13605745 has 16 divisors (see below), whose sum is σ = 17141760. Its totient is φ = 10353600.

The previous prime is 13605743. The next prime is 13605749. The reversal of 13605745 is 54750631.

It is not a de Polignac number, because 13605745 - 2¹ = 13605743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (13605743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8736 + ... + 10174.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^13605745 is an apocalyptic number.

It is an amenable number.

13605745 is a deficient number, since it is larger than the sum of its proper divisors (3536015).

13605745 is a wasteful number, since it uses less digits than its factorization.

13605745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 13605745 is about 3688.5966166010. The cubic root of 13605745 is about 238.7302442467.

The spelling of 13605745 in words is "thirteen million, six hundred five thousand, seven hundred forty-five".