68539471 has 48 divisors (see below), whose sum is σ = 96975360. Its totient is φ = 46949760.

The previous prime is 68539469. The next prime is 68539477. The reversal of 68539471 is 17493586.

It is not a de Polignac number, because 68539471 - 2¹ = 68539469 is a prime.

It is a super-3 number, since 3×68539471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68539477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 299185 + ... + 299413.

It is an arithmetic number, because the mean of its divisors is an integer number (2020320).

Almost surely, 2^68539471 is an apocalyptic number.

68539471 is a deficient number, since it is larger than the sum of its proper divisors (28435889).

68539471 is a wasteful number, since it uses less digits than its factorization.

68539471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 283 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 68539471 is about 8278.8568655340. The cubic root of 68539471 is about 409.2420480096.

The spelling of 68539471 in words is "sixty-eight million, five hundred thirty-nine thousand, four hundred seventy-one".