11997599 has 2 divisors, whose sum is σ = 11997600. Its totient is φ = 11997598.

The previous prime is 11997593. The next prime is 11997611. The reversal of 11997599 is 99579911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11997599 - 2⁸ = 11997343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11997593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998799 + 5998800.

It is an arithmetic number, because the mean of its divisors is an integer number (5998800).

Almost surely, 2^11997599 is an apocalyptic number.

11997599 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997599 is an equidigital number, since it uses as much as digits as its factorization.

11997599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 229635, while the sum is 50.

The square root of 11997599 is about 3463.7550433020. The cubic root of 11997599 is about 228.9275782761.

The spelling of 11997599 in words is "eleven million, nine hundred ninety-seven thousand, five hundred ninety-nine".