68510228 has 6 divisors (see below), whose sum is σ = 119892906. Its totient is φ = 34255112.

The previous prime is 68510207. The next prime is 68510231. The reversal of 68510228 is 82201586.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 4318084 = 8012^2 + 2078^2 .

It is a super-2 number, since 2×68510228² = 9387302681223968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68510194 and 68510203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8563775 + ... + 8563782.

It is an arithmetic number, because the mean of its divisors is an integer number (19982151).

Almost surely, 2^68510228 is an apocalyptic number.

It is an amenable number.

68510228 is a deficient number, since it is larger than the sum of its proper divisors (51382678).

68510228 is a wasteful number, since it uses less digits than its factorization.

68510228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17127561 (or 17127559 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 68510228 is about 8277.0905516371. The cubic root of 68510228 is about 409.1838374269.

The spelling of 68510228 in words is "sixty-eight million, five hundred ten thousand, two hundred twenty-eight".