13077661 has 2 divisors, whose sum is σ = 13077662. Its totient is φ = 13077660.

The previous prime is 13077611. The next prime is 13077667. The reversal of 13077661 is 16677031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10208025 + 2869636 = 3195^2 + 1694^2 .

It is a cyclic number.

It is not a de Polignac number, because 13077661 - 2²¹ = 10980509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13077667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6538830 + 6538831.

It is an arithmetic number, because the mean of its divisors is an integer number (6538831).

Almost surely, 2^13077661 is an apocalyptic number.

It is an amenable number.

13077661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13077661 is an equidigital number, since it uses as much as digits as its factorization.

13077661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 13077661 is about 3616.3048820585. The cubic root of 13077661 is about 235.6007625631.

The spelling of 13077661 in words is "thirteen million, seventy-seven thousand, six hundred sixty-one".