12767997 has 16 divisors (see below), whose sum is σ = 19075392. Its totient is φ = 7528320.

The previous prime is 12767987. The next prime is 12768023. The reversal of 12767997 is 79976721.

It is not a de Polignac number, because 12767997 - 2¹⁸ = 12505853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12767927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4008 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (1192212).

Almost surely, 2^12767997 is an apocalyptic number.

It is an amenable number.

12767997 is a deficient number, since it is larger than the sum of its proper divisors (6307395).

12767997 is a wasteful number, since it uses less digits than its factorization.

12767997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508.

The product of its digits is 333396, while the sum is 48.

The square root of 12767997 is about 3573.2334096725. The cubic root of 12767997 is about 233.7263035641.

The spelling of 12767997 in words is "twelve million, seven hundred sixty-seven thousand, nine hundred ninety-seven".