12745287 has 6 divisors (see below), whose sum is σ = 18409872. Its totient is φ = 8496852.

The previous prime is 12745283. The next prime is 12745321. The reversal of 12745287 is 78254721.

12745287 is a `hidden beast` number, since 127 + 4 + 528 + 7 = 666.

12745287 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12745287 - 2² = 12745283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12745283) 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, 708063 + ... + 708080.

It is an arithmetic number, because the mean of its divisors is an integer number (3068312).

Almost surely, 2^12745287 is an apocalyptic number.

12745287 is a deficient number, since it is larger than the sum of its proper divisors (5664585).

12745287 is a wasteful number, since it uses less digits than its factorization.

12745287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416149 (or 1416146 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12745287 is about 3570.0542012692. The cubic root of 12745287 is about 233.5876476607.

It can be divided in two parts, 1274 and 5287, that added together give a 8-th power (6561 = 3⁸).

The spelling of 12745287 in words is "twelve million, seven hundred forty-five thousand, two hundred eighty-seven".