17920713 has 4 divisors (see below), whose sum is σ = 23894288. Its totient is φ = 11947140.

The previous prime is 17920699. The next prime is 17920717. The reversal of 17920713 is 31702971.

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 not a de Polignac number, because 17920713 - 2¹⁰ = 17919689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (17920717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2986783 + ... + 2986788.

It is an arithmetic number, because the mean of its divisors is an integer number (5973572).

Almost surely, 2^17920713 is an apocalyptic number.

It is an amenable number.

17920713 is a deficient number, since it is larger than the sum of its proper divisors (5973575).

17920713 is an equidigital number, since it uses as much as digits as its factorization.

17920713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973574.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 17920713 is about 4233.2863120748. The cubic root of 17920713 is about 261.6887754094.

The spelling of 17920713 in words is "seventeen million, nine hundred twenty thousand, seven hundred thirteen".