11988637 has 2 divisors, whose sum is σ = 11988638. Its totient is φ = 11988636.

The previous prime is 11988631. The next prime is 11988643. The reversal of 11988637 is 73688911.

It is a balanced prime because it is at equal distance from previous prime (11988631) and next prime (11988643).

It can be written as a sum of positive squares in only one way, i.e., 8259876 + 3728761 = 2874^2 + 1931^2 .

It is a cyclic number.

It is not a de Polignac number, because 11988637 - 2¹⁵ = 11955869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11988593 and 11988602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11988631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994318 + 5994319.

It is an arithmetic number, because the mean of its divisors is an integer number (5994319).

Almost surely, 2^11988637 is an apocalyptic number.

It is an amenable number.

11988637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11988637 is an equidigital number, since it uses as much as digits as its factorization.

11988637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 11988637 is about 3462.4611189153. The cubic root of 11988637 is about 228.8705624232.

The spelling of 11988637 in words is "eleven million, nine hundred eighty-eight thousand, six hundred thirty-seven".