12197564 has 6 divisors (see below), whose sum is σ = 21345744. Its totient is φ = 6098780.

The previous prime is 12197557. The next prime is 12197593. The reversal of 12197564 is 46579121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1524692 + ... + 1524699.

It is an arithmetic number, because the mean of its divisors is an integer number (3557624).

Almost surely, 2^12197564 is an apocalyptic number.

It is an amenable number.

12197564 is a deficient number, since it is larger than the sum of its proper divisors (9148180).

12197564 is a wasteful number, since it uses less digits than its factorization.

12197564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049395 (or 3049393 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 12197564 is about 3492.5011095202. The cubic root of 12197564 is about 230.1924287523.

The spelling of 12197564 in words is "twelve million, one hundred ninety-seven thousand, five hundred sixty-four".