13634993 has 2 divisors, whose sum is σ = 13634994. Its totient is φ = 13634992.

The previous prime is 13634987. The next prime is 13635007. The reversal of 13634993 is 39943631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8196769 + 5438224 = 2863^2 + 2332^2 .

It is a cyclic number.

It is not a de Polignac number, because 13634993 - 2⁴ = 13634977 is a prime.

It is a super-2 number, since 2×13634993² = 371826068220098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13634923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817496 + 6817497.

It is an arithmetic number, because the mean of its divisors is an integer number (6817497).

Almost surely, 2^13634993 is an apocalyptic number.

It is an amenable number.

13634993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13634993 is an equidigital number, since it uses as much as digits as its factorization.

13634993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 38.

The square root of 13634993 is about 3692.5591396754. The cubic root of 13634993 is about 238.9011863709.

The spelling of 13634993 in words is "thirteen million, six hundred thirty-four thousand, nine hundred ninety-three".