68231984 has 40 divisors (see below), whose sum is σ = 139752960. Its totient is φ = 32205888.

The previous prime is 68231957. The next prime is 68231987. The reversal of 68231984 is 48913286.

It is not an unprimeable number, because it can be changed into a prime (68231987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27899 + ... + 30245.

It is an arithmetic number, because the mean of its divisors is an integer number (3493824).

Almost surely, 2^68231984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68231984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69876480).

68231984 is an abundant number, since it is smaller than the sum of its proper divisors (71520976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68231984 is a wasteful number, since it uses less digits than its factorization.

68231984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457 (or 2451 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 68231984 is about 8260.2653710398. The cubic root of 68231984 is about 408.6291395766.

The spelling of 68231984 in words is "sixty-eight million, two hundred thirty-one thousand, nine hundred eighty-four".