12806590 has 8 divisors (see below), whose sum is σ = 23051880. Its totient is φ = 5122632.

The previous prime is 12806587. The next prime is 12806597. The reversal of 12806590 is 9560821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12806597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640320 + ... + 640339.

It is an arithmetic number, because the mean of its divisors is an integer number (2881485).

Almost surely, 2^12806590 is an apocalyptic number.

12806590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12806590 is a deficient number, since it is larger than the sum of its proper divisors (10245290).

12806590 is a wasteful number, since it uses less digits than its factorization.

12806590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280666.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 12806590 is about 3578.6296259881. The cubic root of 12806590 is about 233.9615564965.

The spelling of 12806590 in words is "twelve million, eight hundred six thousand, five hundred ninety".