16713321 has 4 divisors (see below), whose sum is σ = 22284432. Its totient is φ = 11142212.

The previous prime is 16713317. The next prime is 16713377. The reversal of 16713321 is 12331761.

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 16713321 - 2² = 16713317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16713291 and 16713300.

It is not an unprimeable number, because it can be changed into a prime (16713311) 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, 2785551 + ... + 2785556.

It is an arithmetic number, because the mean of its divisors is an integer number (5571108).

Almost surely, 2^16713321 is an apocalyptic number.

It is an amenable number.

16713321 is a deficient number, since it is larger than the sum of its proper divisors (5571111).

16713321 is an equidigital number, since it uses as much as digits as its factorization.

16713321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571110.

The product of its digits is 756, while the sum is 24.

The square root of 16713321 is about 4088.1928770546. The cubic root of 16713321 is about 255.6745997851.

The spelling of 16713321 in words is "sixteen million, seven hundred thirteen thousand, three hundred twenty-one".