12620863 has 4 divisors (see below), whose sum is σ = 12889440. Its totient is φ = 12352288.

The previous prime is 12620843. The next prime is 12620891. The reversal of 12620863 is 36802621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12620863 - 2⁵ = 12620831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134218 + ... + 134311.

It is an arithmetic number, because the mean of its divisors is an integer number (3222360).

Almost surely, 2^12620863 is an apocalyptic number.

12620863 is a deficient number, since it is larger than the sum of its proper divisors (268577).

12620863 is an equidigital number, since it uses as much as digits as its factorization.

12620863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268576.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12620863 is about 3552.5853965809. The cubic root of 12620863 is about 232.8250388844.

The spelling of 12620863 in words is "twelve million, six hundred twenty thousand, eight hundred sixty-three".