12797655 has 16 divisors (see below), whose sum is σ = 22051680. Its totient is φ = 6300288.

The previous prime is 12797641. The next prime is 12797669. The reversal of 12797655 is 55679721.

12797655 = 271² + 272² + ... + 387².

It is an interprime number because it is at equal distance from previous prime (12797641) and next prime (12797669).

It is not a de Polignac number, because 12797655 - 2⁴ = 12797639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32620 + ... + 33009.

It is an arithmetic number, because the mean of its divisors is an integer number (1378230).

Almost surely, 2^12797655 is an apocalyptic number.

12797655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12797655 is a deficient number, since it is larger than the sum of its proper divisors (9254025).

12797655 is a wasteful number, since it uses less digits than its factorization.

12797655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65650.

The product of its digits is 132300, while the sum is 42.

The square root of 12797655 is about 3577.3810252753. The cubic root of 12797655 is about 233.9071331396.

The spelling of 12797655 in words is "twelve million, seven hundred ninety-seven thousand, six hundred fifty-five".