68474784 has 192 divisors, whose sum is σ = 224501760. Its totient is φ = 17832960.

The previous prime is 68474779. The next prime is 68474801. The reversal of 68474784 is 48747486.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 395722 + ... + 395894.

It is an arithmetic number, because the mean of its divisors is an integer number (1169280).

Almost surely, 2^68474784 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 68474784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112250880).

68474784 is an abundant number, since it is smaller than the sum of its proper divisors (156026976).

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

68474784 is a wasteful number, since it uses less digits than its factorization.

68474784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 235 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 68474784 is about 8274.9491841340. The cubic root of 68474784 is about 409.1132610368.

The spelling of 68474784 in words is "sixty-eight million, four hundred seventy-four thousand, seven hundred eighty-four".