12697407 has 6 divisors (see below), whose sum is σ = 18340712. Its totient is φ = 8464932.

The previous prime is 12697393. The next prime is 12697409. The reversal of 12697407 is 70479621.

It is a happy number.

It is not a de Polignac number, because 12697407 - 2⁶ = 12697343 is a prime.

It is a super-2 number, since 2×12697407² = 322448289047298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12697409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705403 + ... + 705420.

Almost surely, 2^12697407 is an apocalyptic number.

12697407 is a deficient number, since it is larger than the sum of its proper divisors (5643305).

12697407 is a wasteful number, since it uses less digits than its factorization.

12697407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410829 (or 1410826 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12697407 is about 3563.3421109964. The cubic root of 12697407 is about 233.2947757150.

The spelling of 12697407 in words is "twelve million, six hundred ninety-seven thousand, four hundred seven".