11996987 has 2 divisors, whose sum is σ = 11996988. Its totient is φ = 11996986.

The previous prime is 11996939. The next prime is 11996993. The reversal of 11996987 is 78969911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11996987 - 2¹² = 11992891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11996927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998493 + 5998494.

It is an arithmetic number, because the mean of its divisors is an integer number (5998494).

Almost surely, 2^11996987 is an apocalyptic number.

11996987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11996987 is an equidigital number, since it uses as much as digits as its factorization.

11996987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 50.

The square root of 11996987 is about 3463.6666987457. Note that the first 4 decimals coincide. The cubic root of 11996987 is about 228.9236856622.

The spelling of 11996987 in words is "eleven million, nine hundred ninety-six thousand, nine hundred eighty-seven".