12790655 has 4 divisors (see below), whose sum is σ = 15348792. Its totient is φ = 10232520.

The previous prime is 12790639. The next prime is 12790699. The reversal of 12790655 is 55609721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55609721 = 73 ⋅761777.

It is not a de Polignac number, because 12790655 - 2⁴ = 12790639 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, 1279061 + ... + 1279070.

It is an arithmetic number, because the mean of its divisors is an integer number (3837198).

Almost surely, 2^12790655 is an apocalyptic number.

12790655 is a deficient number, since it is larger than the sum of its proper divisors (2558137).

12790655 is an equidigital number, since it uses as much as digits as its factorization.

12790655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558136.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 12790655 is about 3576.4025220884. The cubic root of 12790655 is about 233.8644782274.

The spelling of 12790655 in words is "twelve million, seven hundred ninety thousand, six hundred fifty-five".