12967691 has 6 divisors (see below), whose sum is σ = 14253876. Its totient is φ = 11788700.

The previous prime is 12967687. The next prime is 12967697. The reversal of 12967691 is 19676921.

It is not a de Polignac number, because 12967691 - 2² = 12967687 is a prime.

It is a super-2 number, since 2×12967691² = 336322019742962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12967697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53465 + ... + 53706.

It is an arithmetic number, because the mean of its divisors is an integer number (2375646).

Almost surely, 2^12967691 is an apocalyptic number.

12967691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12967691 is a deficient number, since it is larger than the sum of its proper divisors (1286185).

12967691 is a wasteful number, since it uses less digits than its factorization.

12967691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107193 (or 107182 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 12967691 is about 3601.0680360138. The cubic root of 12967691 is about 234.9385141692.

It can be divided in two parts, 1 and 2967691, that added together give a palindrome (2967692).

The spelling of 12967691 in words is "twelve million, nine hundred sixty-seven thousand, six hundred ninety-one".