68581359 has 24 divisors (see below), whose sum is σ = 123507072. Its totient is φ = 35626320.

The previous prime is 68581343. The next prime is 68581361. The reversal of 68581359 is 95318586.

68581359 is a `hidden beast` number, since 68 + 581 + 3 + 5 + 9 = 666.

It is not a de Polignac number, because 68581359 - 2⁴ = 68581343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68581309) 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 23 ways as a sum of consecutive naturals, for example, 48789 + ... + 50174.

It is an arithmetic number, because the mean of its divisors is an integer number (5146128).

Almost surely, 2^68581359 is an apocalyptic number.

68581359 is a deficient number, since it is larger than the sum of its proper divisors (54925713).

68581359 is a wasteful number, since it uses less digits than its factorization.

68581359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98987 (or 98984 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 68581359 is about 8281.3862969916. The cubic root of 68581359 is about 409.3254006610.

The spelling of 68581359 in words is "sixty-eight million, five hundred eighty-one thousand, three hundred fifty-nine".