68306624 has 28 divisors (see below), whose sum is σ = 136955784. Its totient is φ = 33798144.

The previous prime is 68306621. The next prime is 68306633. The reversal of 68306624 is 42660386.

It is not an unprimeable number, because it can be changed into a prime (68306621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (4891278).

Almost surely, 2^68306624 is an apocalyptic number.

68306624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68306624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68477892).

68306624 is an abundant number, since it is smaller than the sum of its proper divisors (68649160).

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

68306624 is a wasteful number, since it uses less digits than its factorization.

68306624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112 (or 11102 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 68306624 is about 8264.7821507890. The cubic root of 68306624 is about 408.7780871446.

The spelling of 68306624 in words is "sixty-eight million, three hundred six thousand, six hundred twenty-four".