13040693 has 2 divisors, whose sum is σ = 13040694. Its totient is φ = 13040692.

The previous prime is 13040689. The next prime is 13040743. The reversal of 13040693 is 39604031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12909649 + 131044 = 3593^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 13040693 - 2² = 13040689 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13040603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6520346 + 6520347.

It is an arithmetic number, because the mean of its divisors is an integer number (6520347).

Almost surely, 2^13040693 is an apocalyptic number.

It is an amenable number.

13040693 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040693 is an equidigital number, since it uses as much as digits as its factorization.

13040693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13040693 is about 3611.1899700791. The cubic root of 13040693 is about 235.3785538983.

The spelling of 13040693 in words is "thirteen million, forty thousand, six hundred ninety-three".