12197775 has 24 divisors (see below), whose sum is σ = 20375680. Its totient is φ = 6438240.

The previous prime is 12197749. The next prime is 12197821. The reversal of 12197775 is 57779121.

It is not a de Polignac number, because 12197775 - 2⁸ = 12197519 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6936 + ... + 8514.

Almost surely, 2^12197775 is an apocalyptic number.

12197775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12197775 is a deficient number, since it is larger than the sum of its proper divisors (8177905).

12197775 is a wasteful number, since it uses less digits than its factorization.

12197775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 1690 counting only the distinct ones).

The product of its digits is 30870, while the sum is 39.

The square root of 12197775 is about 3492.5313169677. The cubic root of 12197775 is about 230.1937560753.

The spelling of 12197775 in words is "twelve million, one hundred ninety-seven thousand, seven hundred seventy-five".