13416691 has 2 divisors, whose sum is σ = 13416692. Its totient is φ = 13416690.

The previous prime is 13416671. The next prime is 13416709. The reversal of 13416691 is 19661431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13416691 - 2⁷ = 13416563 is a prime.

It is not a weakly prime, because it can be changed into another prime (13416631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6708345 + 6708346.

It is an arithmetic number, because the mean of its divisors is an integer number (6708346).

Almost surely, 2^13416691 is an apocalyptic number.

13416691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13416691 is an equidigital number, since it uses as much as digits as its factorization.

13416691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 13416691 is about 3662.8801509195. The cubic root of 13416691 is about 237.6193512772.

The spelling of 13416691 in words is "thirteen million, four hundred sixteen thousand, six hundred ninety-one".