12887806 has 4 divisors (see below), whose sum is σ = 19331712. Its totient is φ = 6443902.

The previous prime is 12887773. The next prime is 12887807. The reversal of 12887806 is 60878821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221950 + ... + 3221953.

It is an arithmetic number, because the mean of its divisors is an integer number (4832928).

Almost surely, 2^12887806 is an apocalyptic number.

12887806 is a deficient number, since it is larger than the sum of its proper divisors (6443906).

12887806 is an equidigital number, since it uses as much as digits as its factorization.

12887806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443905.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 12887806 is about 3589.9590526913. The cubic root of 12887806 is about 234.4550887422.

The spelling of 12887806 in words is "twelve million, eight hundred eighty-seven thousand, eight hundred six".