13490657 has 2 divisors, whose sum is σ = 13490658. Its totient is φ = 13490656.

The previous prime is 13490641. The next prime is 13490669. The reversal of 13490657 is 75609431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8755681 + 4734976 = 2959^2 + 2176^2 .

It is a cyclic number.

It is not a de Polignac number, because 13490657 - 2⁴ = 13490641 is a prime.

It is not a weakly prime, because it can be changed into another prime (13490677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6745328 + 6745329.

It is an arithmetic number, because the mean of its divisors is an integer number (6745329).

Almost surely, 2^13490657 is an apocalyptic number.

It is an amenable number.

13490657 is a deficient number, since it is larger than the sum of its proper divisors (1).

13490657 is an equidigital number, since it uses as much as digits as its factorization.

13490657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 13490657 is about 3672.9629728599. The cubic root of 13490657 is about 238.0552151628.

The spelling of 13490657 in words is "thirteen million, four hundred ninety thousand, six hundred fifty-seven".