13620667 has 2 divisors, whose sum is σ = 13620668. Its totient is φ = 13620666.

The previous prime is 13620641. The next prime is 13620671. The reversal of 13620667 is 76602631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13620667 - 2¹⁹ = 13096379 is a prime.

It is not a weakly prime, because it can be changed into another prime (13620697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810333 + 6810334.

It is an arithmetic number, because the mean of its divisors is an integer number (6810334).

Almost surely, 2^13620667 is an apocalyptic number.

13620667 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620667 is an equidigital number, since it uses as much as digits as its factorization.

13620667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13620667 is about 3690.6187828059. The cubic root of 13620667 is about 238.8174875688.

The spelling of 13620667 in words is "thirteen million, six hundred twenty thousand, six hundred sixty-seven".