11997107 has 2 divisors, whose sum is σ = 11997108. Its totient is φ = 11997106.

The previous prime is 11997071. The next prime is 11997109. The reversal of 11997107 is 70179911.

It is a happy number.

Together with previous prime (11997071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11997107 - 2⁸ = 11996851 is a prime.

Together with 11997109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11997109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998553 + 5998554.

It is an arithmetic number, because the mean of its divisors is an integer number (5998554).

Almost surely, 2^11997107 is an apocalyptic number.

11997107 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997107 is an equidigital number, since it uses as much as digits as its factorization.

11997107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 11997107 is about 3463.6840213853. The cubic root of 11997107 is about 228.9244489303.

The spelling of 11997107 in words is "eleven million, nine hundred ninety-seven thousand, one hundred seven".