13768809 has 8 divisors (see below), whose sum is σ = 18414240. Its totient is φ = 9151296.

The previous prime is 13768753. The next prime is 13768819. The reversal of 13768809 is 90886731.

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

It is not a de Polignac number, because 13768809 - 2¹¹ = 13766761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13768819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5799 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (2301780).

Almost surely, 2^13768809 is an apocalyptic number.

It is an amenable number.

13768809 is a deficient number, since it is larger than the sum of its proper divisors (4645431).

13768809 is a wasteful number, since it uses less digits than its factorization.

13768809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13959.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 13768809 is about 3710.6345818472. The cubic root of 13768809 is about 239.6801816458.

The spelling of 13768809 in words is "thirteen million, seven hundred sixty-eight thousand, eight hundred nine".