11578639 has 2 divisors, whose sum is σ = 11578640. Its totient is φ = 11578638.

The previous prime is 11578613. The next prime is 11578661. The reversal of 11578639 is 93687511.

11578639 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93687511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11578639 - 2⁵ = 11578607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11578439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789319 + 5789320.

It is an arithmetic number, because the mean of its divisors is an integer number (5789320).

Almost surely, 2^11578639 is an apocalyptic number.

11578639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11578639 is an equidigital number, since it uses as much as digits as its factorization.

11578639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 11578639 is about 3402.7399254130. The cubic root of 11578639 is about 226.2312028175.

The spelling of 11578639 in words is "eleven million, five hundred seventy-eight thousand, six hundred thirty-nine".