12197618 has 16 divisors (see below), whose sum is σ = 18697824. Its totient is φ = 5966400.

The previous prime is 12197617. The next prime is 12197641. The reversal of 12197618 is 81679121.

It is not an unprimeable number, because it can be changed into a prime (12197611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30218 + ... + 30618.

It is an arithmetic number, because the mean of its divisors is an integer number (1168614).

Almost surely, 2^12197618 is an apocalyptic number.

12197618 is a deficient number, since it is larger than the sum of its proper divisors (6500206).

12197618 is a wasteful number, since it uses less digits than its factorization.

12197618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 6048, while the sum is 35.

The square root of 12197618 is about 3492.5088403610. The cubic root of 12197618 is about 230.1927684478.

The spelling of 12197618 in words is "twelve million, one hundred ninety-seven thousand, six hundred eighteen".