68031585 has 24 divisors (see below), whose sum is σ = 123050304. Its totient is φ = 34705440.

The previous prime is 68031583. The next prime is 68031611. The reversal of 68031585 is 58513086.

It is not a de Polignac number, because 68031585 - 2¹ = 68031583 is a prime.

It is a super-2 number, since 2×68031585² = 9256593115224450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68031583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31831 + ... + 33900.

It is an arithmetic number, because the mean of its divisors is an integer number (5127096).

Almost surely, 2^68031585 is an apocalyptic number.

It is an amenable number.

68031585 is a deficient number, since it is larger than the sum of its proper divisors (55018719).

68031585 is a wasteful number, since it uses less digits than its factorization.

68031585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65765 (or 65762 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 68031585 is about 8248.1261508297. The cubic root of 68031585 is about 408.2286960355.

The spelling of 68031585 in words is "sixty-eight million, thirty-one thousand, five hundred eighty-five".