13602991 has 2 divisors, whose sum is σ = 13602992. Its totient is φ = 13602990.

The previous prime is 13602977. The next prime is 13602997. The reversal of 13602991 is 19920631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13602991 - 2¹⁵ = 13570223 is a prime.

It is a super-3 number, since 3×13602991³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13602997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6801495 + 6801496.

It is an arithmetic number, because the mean of its divisors is an integer number (6801496).

Almost surely, 2^13602991 is an apocalyptic number.

13602991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13602991 is an equidigital number, since it uses as much as digits as its factorization.

13602991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 13602991 is about 3688.2232849978. The cubic root of 13602991 is about 238.7141356726.

The spelling of 13602991 in words is "thirteen million, six hundred two thousand, nine hundred ninety-one".