16998722 has 8 divisors (see below), whose sum is σ = 27459516. Its totient is φ = 7845552.

The previous prime is 16998721. The next prime is 16998739. The reversal of 16998722 is 22789961.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15768841 + 1229881 = 3971^2 + 1109^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16998721) 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, 326873 + ... + 326924.

Almost surely, 2^16998722 is an apocalyptic number.

16998722 is a deficient number, since it is larger than the sum of its proper divisors (10460794).

16998722 is a wasteful number, since it uses less digits than its factorization.

16998722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653812.

The product of its digits is 108864, while the sum is 44.

The square root of 16998722 is about 4122.9506424404. The cubic root of 16998722 is about 257.1217155752.

The spelling of 16998722 in words is "sixteen million, nine hundred ninety-eight thousand, seven hundred twenty-two".