68304672 has 54 divisors (see below), whose sum is σ = 194641083. Its totient is φ = 22721472.

The previous prime is 68304667. The next prime is 68304697. The reversal of 68304672 is 27640386.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 34152336 + 34152336 = 5844^2 + 5844^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5844.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 140013 + ... + 140499.

Almost surely, 2^68304672 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 68304672

68304672 is an abundant number, since it is smaller than the sum of its proper divisors (126336411).

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

68304672 is an equidigital number, since it uses as much as digits as its factorization.

68304672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 68304672 is about 8264.6640585084. The cubic root of 68304672 is about 408.7741932205.

The spelling of 68304672 in words is "sixty-eight million, three hundred four thousand, six hundred seventy-two".