68171593 has 10 divisors (see below), whose sum is σ = 79531594. Its totient is φ = 58430736.

The previous prime is 68171569. The next prime is 68171603. The reversal of 68171593 is 39517186.

It can be written as a sum of positive squares in only one way, i.e., 67765824 + 405769 = 8232^2 + 637^2 .

It is not a de Polignac number, because 68171593 - 2¹³ = 68163401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68171293) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11796 + ... + 16597.

Almost surely, 2^68171593 is an apocalyptic number.

It is an amenable number.

68171593 is a deficient number, since it is larger than the sum of its proper divisors (11360001).

68171593 is an frugal number, since it uses more digits than its factorization.

68171593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28421 (or 28400 counting only the distinct ones).

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

The square root of 68171593 is about 8256.6090497250. The cubic root of 68171593 is about 408.5085470282.

The spelling of 68171593 in words is "sixty-eight million, one hundred seventy-one thousand, five hundred ninety-three".