13620619 has 2 divisors, whose sum is σ = 13620620. Its totient is φ = 13620618.

The previous prime is 13620601. The next prime is 13620641. The reversal of 13620619 is 91602631.

It is a weak prime.

It is an emirp because it is prime and its reverse (91602631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13620619 - 2¹¹ = 13618571 is a prime.

It is a super-2 number, since 2×13620619² = 371042523886322, which contains 22 as substring.

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, 6810309 + 6810310.

It is an arithmetic number, because the mean of its divisors is an integer number (6810310).

Almost surely, 2^13620619 is an apocalyptic number.

13620619 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620619 is an equidigital number, since it uses as much as digits as its factorization.

13620619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13620619 is about 3690.6122798257. The cubic root of 13620619 is about 238.8172070330.

The spelling of 13620619 in words is "thirteen million, six hundred twenty thousand, six hundred nineteen".