68416720 has 120 divisors (see below), whose sum is σ = 176881536. Its totient is φ = 24558336.

The previous prime is 68416717. The next prime is 68416753. The reversal of 68416720 is 2761486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664189 + ... + 664291.

Almost surely, 2^68416720 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 68416720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88440768).

68416720 is an abundant number, since it is smaller than the sum of its proper divisors (108464816).

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

68416720 is a wasteful number, since it uses less digits than its factorization.

68416720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68416720 is about 8271.4400197305. The cubic root of 68416720 is about 408.9975908658.

The spelling of 68416720 in words is "sixty-eight million, four hundred sixteen thousand, seven hundred twenty".