16598945 has 16 divisors (see below), whose sum is σ = 21980160. Its totient is φ = 11932800.

The previous prime is 16598941. The next prime is 16598947. The reversal of 16598945 is 54989561.

It is a happy number.

It is not a de Polignac number, because 16598945 - 2² = 16598941 is a prime.

It is a super-2 number, since 2×16598945² = 551049950226050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16598945.

It is not an unprimeable number, because it can be changed into a prime (16598941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3200 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (1373760).

Almost surely, 2^16598945 is an apocalyptic number.

It is an amenable number.

16598945 is a deficient number, since it is larger than the sum of its proper divisors (5381215).

16598945 is a wasteful number, since it uses less digits than its factorization.

16598945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496.

The product of its digits is 388800, while the sum is 47.

The square root of 16598945 is about 4074.1802856526. The cubic root of 16598945 is about 255.0900361286.

The spelling of 16598945 in words is "sixteen million, five hundred ninety-eight thousand, nine hundred forty-five".