12597922 has 4 divisors (see below), whose sum is σ = 18896886. Its totient is φ = 6298960.

The previous prime is 12597917. The next prime is 12597961. The reversal of 12597922 is 22979521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22979521 = 313 ⋅73417.

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 2223081 = 3221^2 + 1491^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3149479 + ... + 3149482.

Almost surely, 2^12597922 is an apocalyptic number.

12597922 is a deficient number, since it is larger than the sum of its proper divisors (6298964).

12597922 is an equidigital number, since it uses as much as digits as its factorization.

12597922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298963.

The product of its digits is 22680, while the sum is 37.

The square root of 12597922 is about 3549.3551527003. The cubic root of 12597922 is about 232.6838842805.

The spelling of 12597922 in words is "twelve million, five hundred ninety-seven thousand, nine hundred twenty-two".