68211824 has 40 divisors (see below), whose sum is σ = 140028240. Its totient is φ = 32099328.

The previous prime is 68211809. The next prime is 68211883. The reversal of 68211824 is 42811286.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51944 + ... + 53240.

It is an arithmetic number, because the mean of its divisors is an integer number (3500706).

Almost surely, 2^68211824 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 68211824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70014120).

68211824 is an abundant number, since it is smaller than the sum of its proper divisors (71816416).

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

68211824 is a wasteful number, since it uses less digits than its factorization.

68211824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1491 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 68211824 is about 8259.0449811101. The cubic root of 68211824 is about 408.5888907351.

The spelling of 68211824 in words is "sixty-eight million, two hundred eleven thousand, eight hundred twenty-four".