16716493 has 4 divisors (see below), whose sum is σ = 16767328. Its totient is φ = 16665660.

The previous prime is 16716481. The next prime is 16716541. The reversal of 16716493 is 39461761.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39461761 = 1567 ⋅25183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16716493 is a prime.

It is a super-2 number, since 2×16716493² = 558882276438098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16716473) 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, 24921 + ... + 25582.

It is an arithmetic number, because the mean of its divisors is an integer number (4191832).

Almost surely, 2^16716493 is an apocalyptic number.

It is an amenable number.

16716493 is a deficient number, since it is larger than the sum of its proper divisors (50835).

16716493 is an equidigital number, since it uses as much as digits as its factorization.

16716493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50834.

The product of its digits is 27216, while the sum is 37.

The square root of 16716493 is about 4088.5808051205. The cubic root of 16716493 is about 255.6907734813.

The spelling of 16716493 in words is "sixteen million, seven hundred sixteen thousand, four hundred ninety-three".