13213604 has 6 divisors (see below), whose sum is σ = 23123814. Its totient is φ = 6606800.

The previous prime is 13213579. The next prime is 13213667. The reversal of 13213604 is 40631231.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 2310400 = 3302^2 + 1520^2 .

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 as a sum of consecutive naturals, namely, 1651697 + ... + 1651704.

It is an arithmetic number, because the mean of its divisors is an integer number (3853969).

Almost surely, 2^13213604 is an apocalyptic number.

It is an amenable number.

13213604 is a deficient number, since it is larger than the sum of its proper divisors (9910210).

13213604 is a wasteful number, since it uses less digits than its factorization.

13213604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303405 (or 3303403 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13213604 is about 3635.0521316757. The cubic root of 13213604 is about 236.4143110105.

Adding to 13213604 its reverse (40631231), we get a palindrome (53844835).

The spelling of 13213604 in words is "thirteen million, two hundred thirteen thousand, six hundred four".