68660228 has 48 divisors (see below), whose sum is σ = 150716160. Its totient is φ = 26642304.

The previous prime is 68660227. The next prime is 68660231. The reversal of 68660228 is 82206686.

It is a junction number, because it is equal to n+sod(n) for n = 68660191 and 68660200.

It is not an unprimeable number, because it can be changed into a prime (68660227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17513 + ... + 21071.

It is an arithmetic number, because the mean of its divisors is an integer number (3139920).

Almost surely, 2^68660228 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 68660228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75358080).

68660228 is an abundant number, since it is smaller than the sum of its proper divisors (82055932).

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

68660228 is a wasteful number, since it uses less digits than its factorization.

68660228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 3634 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 68660228 is about 8286.1467522607. The cubic root of 68660228 is about 409.4822494906.

The spelling of 68660228 in words is "sixty-eight million, six hundred sixty thousand, two hundred twenty-eight".