12785877 has 32 divisors (see below), whose sum is σ = 20720000. Its totient is φ = 7744896.

The previous prime is 12785869. The next prime is 12785933. The reversal of 12785877 is 77858721.

It is not a de Polignac number, because 12785877 - 2³ = 12785869 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12785807) 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 31 ways as a sum of consecutive naturals, for example, 25374 + ... + 25872.

It is an arithmetic number, because the mean of its divisors is an integer number (647500).

Almost surely, 2^12785877 is an apocalyptic number.

It is an amenable number.

12785877 is a deficient number, since it is larger than the sum of its proper divisors (7934123).

12785877 is a wasteful number, since it uses less digits than its factorization.

12785877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 588 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 12785877 is about 3575.7344700075. The cubic root of 12785877 is about 233.8353542656.

The spelling of 12785877 in words is "twelve million, seven hundred eighty-five thousand, eight hundred seventy-seven".