68113224 has 80 divisors (see below), whose sum is σ = 191990700. Its totient is φ = 22560768.

The previous prime is 68113223. The next prime is 68113261. The reversal of 68113224 is 42231186.

It can be written as a sum of positive squares in 2 ways, for example, as 48024900 + 20088324 = 6930^2 + 4482^2 .

It is a super-2 number, since 2×68113224² = 9278822567348352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68113223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166332 + ... + 166740.

Almost surely, 2^68113224 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 68113224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95995350).

68113224 is an abundant number, since it is smaller than the sum of its proper divisors (123877476).

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

68113224 is a wasteful number, since it uses less digits than its factorization.

68113224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 671 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 68113224 is about 8253.0736092682. The cubic root of 68113224 is about 408.3919244353.

The spelling of 68113224 in words is "sixty-eight million, one hundred thirteen thousand, two hundred twenty-four".