12863506 has 8 divisors (see below), whose sum is σ = 19527984. Its totient is φ = 6354180.

The previous prime is 12863483. The next prime is 12863507. The reversal of 12863506 is 60536821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12863506² = 330939573224072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12863507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38580 + ... + 38911.

It is an arithmetic number, because the mean of its divisors is an integer number (2440998).

Almost surely, 2^12863506 is an apocalyptic number.

12863506 is a deficient number, since it is larger than the sum of its proper divisors (6664478).

12863506 is an equidigital number, since it uses as much as digits as its factorization.

12863506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77576.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12863506 is about 3586.5730161256. The cubic root of 12863506 is about 234.3076407554.

The spelling of 12863506 in words is "twelve million, eight hundred sixty-three thousand, five hundred six".