12690855 has 12 divisors (see below), whose sum is σ = 21997560. Its totient is φ = 6768432.

The previous prime is 12690851. The next prime is 12690859. The reversal of 12690855 is 55809621.

It is a happy number.

12690855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12690851) and next prime (12690859).

It is not a de Polignac number, because 12690855 - 2² = 12690851 is a prime.

It is a super-2 number, since 2×12690855² = 322115601262050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12690851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140965 + ... + 141054.

It is an arithmetic number, because the mean of its divisors is an integer number (1833130).

Almost surely, 2^12690855 is an apocalyptic number.

12690855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12690855 is a deficient number, since it is larger than the sum of its proper divisors (9306705).

12690855 is a wasteful number, since it uses less digits than its factorization.

12690855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282030 (or 282027 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 12690855 is about 3562.4226307388. The cubic root of 12690855 is about 233.2546412644.

The spelling of 12690855 in words is "twelve million, six hundred ninety thousand, eight hundred fifty-five".