68362240 has 56 divisors (see below), whose sum is σ = 164157660. Its totient is φ = 27328512.

The previous prime is 68362201. The next prime is 68362241. The reversal of 68362240 is 4226386.

It can be written as a sum of positive squares in 2 ways, for example, as 68161536 + 200704 = 8256^2 + 448^2 .

It is not an unprimeable number, because it can be changed into a prime (68362241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40126 + ... + 41794.

Almost surely, 2^68362240 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 68362240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82078830).

68362240 is an abundant number, since it is smaller than the sum of its proper divisors (95795420).

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

68362240 is an equidigital number, since it uses as much as digits as its factorization.

68362240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 68362240 is about 8268.1461041760. The cubic root of 68362240 is about 408.8890009101.

The spelling of 68362240 in words is "sixty-eight million, three hundred sixty-two thousand, two hundred forty".