13506613 has 2 divisors, whose sum is σ = 13506614. Its totient is φ = 13506612.

The previous prime is 13506599. The next prime is 13506617. The reversal of 13506613 is 31660531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9847044 + 3659569 = 3138^2 + 1913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13506613 is a prime.

It is equal to p₈₈₀₀₃₆ and since 13506613 and 880036 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13506617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6753306 + 6753307.

It is an arithmetic number, because the mean of its divisors is an integer number (6753307).

Almost surely, 2^13506613 is an apocalyptic number.

It is an amenable number.

13506613 is a deficient number, since it is larger than the sum of its proper divisors (1).

13506613 is an equidigital number, since it uses as much as digits as its factorization.

13506613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13506613 is about 3675.1344193104. The cubic root of 13506613 is about 238.1490310158.

The spelling of 13506613 in words is "thirteen million, five hundred six thousand, six hundred thirteen".