13620671 has 2 divisors, whose sum is σ = 13620672. Its totient is φ = 13620670.

The previous prime is 13620667. The next prime is 13620679. The reversal of 13620671 is 17602631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13620671 - 2² = 13620667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13620671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13620679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810335 + 6810336.

It is an arithmetic number, because the mean of its divisors is an integer number (6810336).

Almost surely, 2^13620671 is an apocalyptic number.

13620671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620671 is an equidigital number, since it uses as much as digits as its factorization.

13620671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13620671 is about 3690.6193247204. The cubic root of 13620671 is about 238.8175109467.

The spelling of 13620671 in words is "thirteen million, six hundred twenty thousand, six hundred seventy-one".