16997373 has 6 divisors (see below), whose sum is σ = 24551774. Its totient is φ = 11331576.

The previous prime is 16997371. The next prime is 16997377. The reversal of 16997373 is 37379961.

It can be written as a sum of positive squares in only one way, i.e., 15824484 + 1172889 = 3978^2 + 1083^2 .

It is not a de Polignac number, because 16997373 - 2¹ = 16997371 is a prime.

It is a super-2 number, since 2×16997373² = 577821377802258, 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 (16997371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 944290 + ... + 944307.

Almost surely, 2^16997373 is an apocalyptic number.

It is an amenable number.

16997373 is a deficient number, since it is larger than the sum of its proper divisors (7554401).

16997373 is a wasteful number, since it uses less digits than its factorization.

16997373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888603 (or 1888600 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 16997373 is about 4122.7870427661. The cubic root of 16997373 is about 257.1149137625.

The spelling of 16997373 in words is "sixteen million, nine hundred ninety-seven thousand, three hundred seventy-three".