16198597 has 6 divisors (see below), whose sum is σ = 16552838. Its totient is φ = 15851784.

The previous prime is 16198591. The next prime is 16198613. The reversal of 16198597 is 79589161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8767521 + 7431076 = 2961^2 + 2726^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16198597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16198591) 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, 1458 + ... + 5875.

Almost surely, 2^16198597 is an apocalyptic number.

It is an amenable number.

16198597 is a deficient number, since it is larger than the sum of its proper divisors (354241).

16198597 is an frugal number, since it uses more digits than its factorization.

16198597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7427 (or 7380 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 16198597 is about 4024.7480666496. The cubic root of 16198597 is about 253.0224948363.

The spelling of 16198597 in words is "sixteen million, one hundred ninety-eight thousand, five hundred ninety-seven".