11722487 has 16 divisors (see below), whose sum is σ = 14376960. Its totient is φ = 9333792.

The previous prime is 11722429. The next prime is 11722489. The reversal of 11722487 is 78422711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11722487 - 2⁶ = 11722423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722489) 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 15 ways as a sum of consecutive naturals, for example, 6218 + ... + 7880.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 2^11722487 is an apocalyptic number.

11722487 is a deficient number, since it is larger than the sum of its proper divisors (2654473).

11722487 is a wasteful number, since it uses less digits than its factorization.

11722487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its digits is 6272, while the sum is 32.

The square root of 11722487 is about 3423.8117646857. The cubic root of 11722487 is about 227.1642158212.

The spelling of 11722487 in words is "eleven million, seven hundred twenty-two thousand, four hundred eighty-seven".