12270655 has 4 divisors (see below), whose sum is σ = 14724792. Its totient is φ = 9816520.

The previous prime is 12270647. The next prime is 12270667. The reversal of 12270655 is 55607221.

12270655 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.

It is not a de Polignac number, because 12270655 - 2³ = 12270647 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, 1227061 + ... + 1227070.

It is an arithmetic number, because the mean of its divisors is an integer number (3681198).

Almost surely, 2^12270655 is an apocalyptic number.

12270655 is a deficient number, since it is larger than the sum of its proper divisors (2454137).

12270655 is an equidigital number, since it uses as much as digits as its factorization.

12270655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454136.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 12270655 is about 3502.9494715168. The cubic root of 12270655 is about 230.6513045204.

Adding to 12270655 its reverse (55607221), we get a palindrome (67877876).

The spelling of 12270655 in words is "twelve million, two hundred seventy thousand, six hundred fifty-five".