13613013 has 6 divisors (see below), whose sum is σ = 19663254. Its totient is φ = 9075336.

The previous prime is 13612981. The next prime is 13613021. The reversal of 13613013 is 31031631.

13613013 is a `hidden beast` number, since 1 + 361 + 301 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13593969 + 19044 = 3687^2 + 138^2 .

It is not a de Polignac number, because 13613013 - 2⁵ = 13612981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 756270 + ... + 756287.

It is an arithmetic number, because the mean of its divisors is an integer number (3277209).

Almost surely, 2^13613013 is an apocalyptic number.

It is an amenable number.

13613013 is a deficient number, since it is larger than the sum of its proper divisors (6050241).

13613013 is a wasteful number, since it uses less digits than its factorization.

13613013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512563 (or 1512560 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 13613013 is about 3689.5816836059. The cubic root of 13613013 is about 238.7727454733.

Adding to 13613013 its reverse (31031631), we get a palindrome (44644644).

The spelling of 13613013 in words is "thirteen million, six hundred thirteen thousand, thirteen".