12817817 has 8 divisors (see below), whose sum is σ = 12983040. Its totient is φ = 12654000.

The previous prime is 12817811. The next prime is 12817823. The reversal of 12817817 is 71871821.

12817817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12817811) and next prime (12817823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12817817 - 2⁴ = 12817801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12817811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50942 + ... + 51192.

It is an arithmetic number, because the mean of its divisors is an integer number (1622880).

Almost surely, 2^12817817 is an apocalyptic number.

It is an amenable number.

12817817 is a deficient number, since it is larger than the sum of its proper divisors (165223).

12817817 is a wasteful number, since it uses less digits than its factorization.

12817817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 6272, while the sum is 35.

The square root of 12817817 is about 3580.1978995581. The cubic root of 12817817 is about 234.0299046204.

The spelling of 12817817 in words is "twelve million, eight hundred seventeen thousand, eight hundred seventeen".