68663304 has 48 divisors (see below), whose sum is σ = 187347420. Its totient is φ = 22717440.

The previous prime is 68663297. The next prime is 68663311. The reversal of 68663304 is 40336686.

It is an interprime number because it is at equal distance from previous prime (68663297) and next prime (68663311).

It can be written as a sum of positive squares in 2 ways, for example, as 66096900 + 2566404 = 8130^2 + 1602^2 .

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 11 ways as a sum of consecutive naturals, for example, 6384 + ... + 13344.

Almost surely, 2^68663304 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 68663304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93673710).

68663304 is an abundant number, since it is smaller than the sum of its proper divisors (118684116).

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

68663304 is a wasteful number, since it uses less digits than its factorization.

68663304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110 (or 7103 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 68663304 is about 8286.3323611837. The cubic root of 68663304 is about 409.4883643775.

The spelling of 68663304 in words is "sixty-eight million, six hundred sixty-three thousand, three hundred four".