68508930 has 64 divisors (see below), whose sum is σ = 189342720. Its totient is φ = 15539904.

The previous prime is 68508901. The next prime is 68508931. The reversal of 68508930 is 3980586.

It is not an unprimeable number, because it can be changed into a prime (68508931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28017 + ... + 30363.

It is an arithmetic number, because the mean of its divisors is an integer number (2958480).

Almost surely, 2^68508930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68508930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94671360).

68508930 is an abundant number, since it is smaller than the sum of its proper divisors (120833790).

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

68508930 is a wasteful number, since it uses less digits than its factorization.

68508930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 68508930 is about 8277.0121420716. The cubic root of 68508930 is about 409.1812532679.

The spelling of 68508930 in words is "sixty-eight million, five hundred eight thousand, nine hundred thirty".