12693897 has 18 divisors (see below), whose sum is σ = 18721482. Its totient is φ = 8286624.

The previous prime is 12693893. The next prime is 12693899. The reversal of 12693897 is 79839621.

12693897 is a `hidden beast` number, since 1 + 269 + 389 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11128896 + 1565001 = 3336^2 + 1251^2 .

It is not a de Polignac number, because 12693897 - 2² = 12693893 is a prime.

It is a super-2 number, since 2×12693897² = 322270042093218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12693893) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91254 + ... + 91392.

Almost surely, 2^12693897 is an apocalyptic number.

It is an amenable number.

12693897 is a deficient number, since it is larger than the sum of its proper divisors (6027585).

12693897 is an equidigital number, since it uses as much as digits as its factorization.

12693897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 215 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12693897 is about 3562.8495617974. The cubic root of 12693897 is about 233.2732768339.

The spelling of 12693897 in words is "twelve million, six hundred ninety-three thousand, eight hundred ninety-seven".