12761655 has 16 divisors (see below), whose sum is σ = 20602080. Its totient is φ = 6745088.

The previous prime is 12761647. The next prime is 12761657. The reversal of 12761655 is 55616721.

It is a cyclic number.

It is not a de Polignac number, because 12761655 - 2³ = 12761647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12761657) by changing a digit.

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, 2070 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (1287630).

Almost surely, 2^12761655 is an apocalyptic number.

12761655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12761655 is a deficient number, since it is larger than the sum of its proper divisors (7840425).

12761655 is a wasteful number, since it uses less digits than its factorization.

12761655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650.

The product of its digits is 12600, while the sum is 33.

The square root of 12761655 is about 3572.3458679137. The cubic root of 12761655 is about 233.6875990409.

The spelling of 12761655 in words is "twelve million, seven hundred sixty-one thousand, six hundred fifty-five".