13613983 has 2 divisors, whose sum is σ = 13613984. Its totient is φ = 13613982.

The previous prime is 13613969. The next prime is 13613987. The reversal of 13613983 is 38931631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13613983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13613987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6806991 + 6806992.

It is an arithmetic number, because the mean of its divisors is an integer number (6806992).

Almost surely, 2^13613983 is an apocalyptic number.

13613983 is a deficient number, since it is larger than the sum of its proper divisors (1).

13613983 is an equidigital number, since it uses as much as digits as its factorization.

13613983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 13613983 is about 3689.7131324806. The cubic root of 13613983 is about 238.7784166171.

The spelling of 13613983 in words is "thirteen million, six hundred thirteen thousand, nine hundred eighty-three".