16610197 has 4 divisors (see below), whose sum is σ = 16643340. Its totient is φ = 16577056.

The previous prime is 16610177. The next prime is 16610219. The reversal of 16610197 is 79101661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79101661 = 401 ⋅197261.

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 4036081 = 3546^2 + 2009^2 .

It is a cyclic number.

It is not a de Polignac number, because 16610197 - 2¹¹ = 16608149 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16610107) 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, 15808 + ... + 16825.

It is an arithmetic number, because the mean of its divisors is an integer number (4160835).

Almost surely, 2^16610197 is an apocalyptic number.

It is an amenable number.

16610197 is a deficient number, since it is larger than the sum of its proper divisors (33143).

16610197 is an equidigital number, since it uses as much as digits as its factorization.

16610197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33142.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 16610197 is about 4075.5609429869. The cubic root of 16610197 is about 255.1476627784.

It can be divided in two parts, 16610 and 197, that added together give a 5-th power (16807 = 7⁵).

The spelling of 16610197 in words is "sixteen million, six hundred ten thousand, one hundred ninety-seven".