12867997 has 8 divisors (see below), whose sum is σ = 14342400. Its totient is φ = 11473344.

The previous prime is 12867977. The next prime is 12868003. The reversal of 12867997 is 79976821.

It is a happy number.

12867997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12867997 - 2²³ = 4479389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12867997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867977) 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, 19597 + ... + 20242.

It is an arithmetic number, because the mean of its divisors is an integer number (1792800).

Almost surely, 2^12867997 is an apocalyptic number.

12867997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12867997 is a deficient number, since it is larger than the sum of its proper divisors (1474403).

12867997 is a wasteful number, since it uses less digits than its factorization.

12867997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39875.

The product of its digits is 381024, while the sum is 49.

The square root of 12867997 is about 3587.1990466100. The cubic root of 12867997 is about 234.3349053073.

The spelling of 12867997 in words is "twelve million, eight hundred sixty-seven thousand, nine hundred ninety-seven".