68711481 has 12 divisors (see below), whose sum is σ = 99393840. Its totient is φ = 45741240.

The previous prime is 68711473. The next prime is 68711491. The reversal of 68711481 is 18411786.

It is not a de Polignac number, because 68711481 - 2³ = 68711473 is a prime.

It is a super-2 number, since 2×68711481² = 9442535242426722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68711431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1486 + ... + 11816.

It is an arithmetic number, because the mean of its divisors is an integer number (8282820).

Almost surely, 2^68711481 is an apocalyptic number.

It is an amenable number.

68711481 is a deficient number, since it is larger than the sum of its proper divisors (30682359).

68711481 is a wasteful number, since it uses less digits than its factorization.

68711481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11076 (or 11073 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 68711481 is about 8289.2388673508. The cubic root of 68711481 is about 409.5841132837.

The spelling of 68711481 in words is "sixty-eight million, seven hundred eleven thousand, four hundred eighty-one".