13600645 has 8 divisors (see below), whose sum is σ = 16762104. Its totient is φ = 10586304.

The previous prime is 13600633. The next prime is 13600651. The reversal of 13600645 is 54600631.

It can be written as a sum of positive squares in 4 ways, for example, as 7219969 + 6380676 = 2687^2 + 2526^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13600645 - 2¹⁵ = 13567877 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 36574 + ... + 36943.

It is an arithmetic number, because the mean of its divisors is an integer number (2095263).

Almost surely, 2^13600645 is an apocalyptic number.

It is an amenable number.

13600645 is a deficient number, since it is larger than the sum of its proper divisors (3161459).

13600645 is an equidigital number, since it uses as much as digits as its factorization.

13600645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73559.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 13600645 is about 3687.9052319711. The cubic root of 13600645 is about 238.7004118388.

The spelling of 13600645 in words is "thirteen million, six hundred thousand, six hundred forty-five".