12864787 has 6 divisors (see below), whose sum is σ = 13930692. Its totient is φ = 11875032.

The previous prime is 12864763. The next prime is 12864791. The reversal of 12864787 is 78746821.

It is not a de Polignac number, because 12864787 - 2¹¹ = 12862739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12864707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37893 + ... + 38230.

It is an arithmetic number, because the mean of its divisors is an integer number (2321782).

Almost surely, 2^12864787 is an apocalyptic number.

12864787 is a deficient number, since it is larger than the sum of its proper divisors (1065905).

12864787 is an equidigital number, since it uses as much as digits as its factorization.

12864787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76149 (or 76136 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 12864787 is about 3586.7515944096. The cubic root of 12864787 is about 234.3154182651.

The spelling of 12864787 in words is "twelve million, eight hundred sixty-four thousand, seven hundred eighty-seven".