13620697 has 2 divisors, whose sum is σ = 13620698. Its totient is φ = 13620696.

The previous prime is 13620679. The next prime is 13620703. The reversal of 13620697 is 79602631.

Together with previous prime (13620679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13571856 + 48841 = 3684^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 13620697 - 2¹⁵ = 13587929 is a prime.

It is not a weakly prime, because it can be changed into another prime (13620667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810348 + 6810349.

It is an arithmetic number, because the mean of its divisors is an integer number (6810349).

Almost surely, 2^13620697 is an apocalyptic number.

It is an amenable number.

13620697 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620697 is an equidigital number, since it uses as much as digits as its factorization.

13620697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13620697 is about 3690.6228471628. The cubic root of 13620697 is about 238.8176629033.

The spelling of 13620697 in words is "thirteen million, six hundred twenty thousand, six hundred ninety-seven".