12790647 has 24 divisors (see below), whose sum is σ = 20049120. Its totient is φ = 7825920.

The previous prime is 12790639. The next prime is 12790699. The reversal of 12790647 is 74609721.

It is a happy number.

12790647 is a `hidden beast` number, since 1 + 2 + 7 + 9 + 0 + 647 = 666.

It is not a de Polignac number, because 12790647 - 2³ = 12790639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12790147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5254 + ... + 7292.

It is an arithmetic number, because the mean of its divisors is an integer number (835380).

Almost surely, 2^12790647 is an apocalyptic number.

12790647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12790647 is a deficient number, since it is larger than the sum of its proper divisors (7258473).

12790647 is a wasteful number, since it uses less digits than its factorization.

12790647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12790647 is about 3576.4014036458. The cubic root of 12790647 is about 233.8644294700.

The spelling of 12790647 in words is "twelve million, seven hundred ninety thousand, six hundred forty-seven".