16620793 has 4 divisors (see below), whose sum is σ = 18995200. Its totient is φ = 14246388.

The previous prime is 16620787. The next prime is 16620827. The reversal of 16620793 is 39702661.

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 16620793 - 2⁵ = 16620761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16620493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187193 + ... + 1187206.

It is an arithmetic number, because the mean of its divisors is an integer number (4748800).

Almost surely, 2^16620793 is an apocalyptic number.

It is an amenable number.

16620793 is a deficient number, since it is larger than the sum of its proper divisors (2374407).

16620793 is an equidigital number, since it uses as much as digits as its factorization.

16620793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374406.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16620793 is about 4076.8606794935. The cubic root of 16620793 is about 255.2019059632.

The spelling of 16620793 in words is "sixteen million, six hundred twenty thousand, seven hundred ninety-three".