13116577 has 4 divisors (see below), whose sum is σ = 13124656. Its totient is φ = 13108500.

The previous prime is 13116569. The next prime is 13116589. The reversal of 13116577 is 77561131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13116577 - 2³ = 13116569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13116277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (3281164).

Almost surely, 2^13116577 is an apocalyptic number.

It is an amenable number.

13116577 is a deficient number, since it is larger than the sum of its proper divisors (8079).

13116577 is an equidigital number, since it uses as much as digits as its factorization.

13116577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078.

The product of its digits is 4410, while the sum is 31.

The square root of 13116577 is about 3621.6815155394. The cubic root of 13116577 is about 235.8342283620.

The spelling of 13116577 in words is "thirteen million, one hundred sixteen thousand, five hundred seventy-seven".