13779365 has 8 divisors (see below), whose sum is σ = 16596600. Its totient is φ = 10982592.

The previous prime is 13779347. The next prime is 13779377. The reversal of 13779365 is 56397731.

It can be written as a sum of positive squares in 4 ways, for example, as 111556 + 13667809 = 334^2 + 3697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13779365 - 2⁶ = 13779301 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3590 + ... + 6359.

It is an arithmetic number, because the mean of its divisors is an integer number (2074575).

Almost surely, 2^13779365 is an apocalyptic number.

It is an amenable number.

13779365 is a deficient number, since it is larger than the sum of its proper divisors (2817235).

13779365 is an equidigital number, since it uses as much as digits as its factorization.

13779365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231.

The product of its digits is 119070, while the sum is 41.

The square root of 13779365 is about 3712.0567075410. The cubic root of 13779365 is about 239.7414170973.

The spelling of 13779365 in words is "thirteen million, seven hundred seventy-nine thousand, three hundred sixty-five".