11987679 has 32 divisors (see below), whose sum is σ = 18247680. Its totient is φ = 6936800.

The previous prime is 11987671. The next prime is 11987681. The reversal of 11987679 is 97678911.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11987679 - 2³ = 11987671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91444 + ... + 91574.

It is an arithmetic number, because the mean of its divisors is an integer number (570240).

Almost surely, 2^11987679 is an apocalyptic number.

11987679 is a deficient number, since it is larger than the sum of its proper divisors (6260001).

11987679 is a wasteful number, since it uses less digits than its factorization.

11987679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its digits is 190512, while the sum is 48.

The square root of 11987679 is about 3462.3227752479. The cubic root of 11987679 is about 228.8644659882.

The spelling of 11987679 in words is "eleven million, nine hundred eighty-seven thousand, six hundred seventy-nine".