12788613 has 12 divisors (see below), whose sum is σ = 18615168. Its totient is φ = 8459880.

The previous prime is 12788609. The next prime is 12788617. The reversal of 12788613 is 31688721.

It is an interprime number because it is at equal distance from previous prime (12788609) and next prime (12788617).

It is not a de Polignac number, because 12788613 - 2² = 12788609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4245 + ... + 6602.

It is an arithmetic number, because the mean of its divisors is an integer number (1551264).

Almost surely, 2^12788613 is an apocalyptic number.

It is an amenable number.

12788613 is a deficient number, since it is larger than the sum of its proper divisors (5826555).

12788613 is a wasteful number, since it uses less digits than its factorization.

12788613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984 (or 10981 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 12788613 is about 3576.1170282864. The cubic root of 12788613 is about 233.8520322481.

The spelling of 12788613 in words is "twelve million, seven hundred eighty-eight thousand, six hundred thirteen".