12722855 has 4 divisors (see below), whose sum is σ = 15267432. Its totient is φ = 10178280.

The previous prime is 12722849. The next prime is 12722863. The reversal of 12722855 is 55822721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12722855 - 2⁶ = 12722791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272281 + ... + 1272290.

It is an arithmetic number, because the mean of its divisors is an integer number (3816858).

Almost surely, 2^12722855 is an apocalyptic number.

12722855 is a deficient number, since it is larger than the sum of its proper divisors (2544577).

12722855 is an equidigital number, since it uses as much as digits as its factorization.

12722855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544576.

The product of its digits is 11200, while the sum is 32.

The square root of 12722855 is about 3566.9111286938. The cubic root of 12722855 is about 233.4505272961.

The spelling of 12722855 in words is "twelve million, seven hundred twenty-two thousand, eight hundred fifty-five".