12856497 has 4 divisors (see below), whose sum is σ = 17142000. Its totient is φ = 8570996.

The previous prime is 12856489. The next prime is 12856499. The reversal of 12856497 is 79465821.

12856497 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12856497 - 2³ = 12856489 is a prime.

It is a super-2 number, since 2×12856497² = 330579030222018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12856499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142747 + ... + 2142752.

It is an arithmetic number, because the mean of its divisors is an integer number (4285500).

Almost surely, 2^12856497 is an apocalyptic number.

It is an amenable number.

12856497 is a deficient number, since it is larger than the sum of its proper divisors (4285503).

12856497 is an equidigital number, since it uses as much as digits as its factorization.

12856497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285502.

The product of its digits is 120960, while the sum is 42.

The square root of 12856497 is about 3585.5957663964. The cubic root of 12856497 is about 234.2650769158.

The spelling of 12856497 in words is "twelve million, eight hundred fifty-six thousand, four hundred ninety-seven".