68589593 has 4 divisors (see below), whose sum is σ = 68606160. Its totient is φ = 68573028.

The previous prime is 68589589. The next prime is 68589613. The reversal of 68589593 is 39598586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39598586 = 2 ⋅19799293.

It is a cyclic number.

It is not a de Polignac number, because 68589593 - 2² = 68589589 is a prime.

It is a super-4 number, since 4×68589593⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68589523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938 + ... + 12356.

It is an arithmetic number, because the mean of its divisors is an integer number (17151540).

Almost surely, 2^68589593 is an apocalyptic number.

It is an amenable number.

68589593 is a deficient number, since it is larger than the sum of its proper divisors (16567).

68589593 is an equidigital number, since it uses as much as digits as its factorization.

68589593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566.

The product of its digits is 2332800, while the sum is 53.

The square root of 68589593 is about 8281.8834210583. The cubic root of 68589593 is about 409.3417814508.

The spelling of 68589593 in words is "sixty-eight million, five hundred eighty-nine thousand, five hundred ninety-three".