16722969 has 8 divisors (see below), whose sum is σ = 22344672. Its totient is φ = 11124960.

The previous prime is 16722961. The next prime is 16722989. The reversal of 16722969 is 96922761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16722969 - 2³ = 16722961 is a prime.

It is a super-2 number, since 2×16722969² = 559315384349922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16722969.

It is not an unprimeable number, because it can be changed into a prime (16722961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4204 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (2793084).

Almost surely, 2^16722969 is an apocalyptic number.

It is an amenable number.

16722969 is a deficient number, since it is larger than the sum of its proper divisors (5621703).

16722969 is a wasteful number, since it uses less digits than its factorization.

16722969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11847.

The product of its digits is 81648, while the sum is 42.

The square root of 16722969 is about 4089.3726902790. The cubic root of 16722969 is about 255.7237875764.

The spelling of 16722969 in words is "sixteen million, seven hundred twenty-two thousand, nine hundred sixty-nine".