12900787 has 4 divisors (see below), whose sum is σ = 13002496. Its totient is φ = 12799080.

The previous prime is 12900757. The next prime is 12900793. The reversal of 12900787 is 78700921.

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

It is a cyclic number.

It is not a de Polignac number, because 12900787 - 2¹⁹ = 12376499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12900757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50664 + ... + 50917.

It is an arithmetic number, because the mean of its divisors is an integer number (3250624).

Almost surely, 2^12900787 is an apocalyptic number.

12900787 is a deficient number, since it is larger than the sum of its proper divisors (101709).

12900787 is a wasteful number, since it uses less digits than its factorization.

12900787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101708.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 12900787 is about 3591.7665570023. The cubic root of 12900787 is about 234.5337791532.

The spelling of 12900787 in words is "twelve million, nine hundred thousand, seven hundred eighty-seven".