13640793 has 4 divisors (see below), whose sum is σ = 18187728. Its totient is φ = 9093860.

The previous prime is 13640791. The next prime is 13640807. The reversal of 13640793 is 39704631.

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.

It is a cyclic number.

It is not a de Polignac number, because 13640793 - 2¹ = 13640791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13640791) 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, 2273463 + ... + 2273468.

It is an arithmetic number, because the mean of its divisors is an integer number (4546932).

Almost surely, 2^13640793 is an apocalyptic number.

It is an amenable number.

13640793 is a deficient number, since it is larger than the sum of its proper divisors (4546935).

13640793 is an equidigital number, since it uses as much as digits as its factorization.

13640793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546934.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 13640793 is about 3693.3444193576. The cubic root of 13640793 is about 238.9350558531.

The spelling of 13640793 in words is "thirteen million, six hundred forty thousand, seven hundred ninety-three".