12747487 has 4 divisors (see below), whose sum is σ = 12937816. Its totient is φ = 12557160.

The previous prime is 12747463. The next prime is 12747503. The reversal of 12747487 is 78474721.

12747487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12747487 - 2¹⁹ = 12223199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12747437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95064 + ... + 95197.

It is an arithmetic number, because the mean of its divisors is an integer number (3234454).

Almost surely, 2^12747487 is an apocalyptic number.

12747487 is a deficient number, since it is larger than the sum of its proper divisors (190329).

12747487 is an equidigital number, since it uses as much as digits as its factorization.

12747487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190328.

The product of its digits is 87808, while the sum is 40.

The square root of 12747487 is about 3570.3623065454. The cubic root of 12747487 is about 233.6010869621.

The spelling of 12747487 in words is "twelve million, seven hundred forty-seven thousand, four hundred eighty-seven".