68024740 has 72 divisors (see below), whose sum is σ = 170328312. Its totient is φ = 22740480.

The previous prime is 68024729. The next prime is 68024741. The reversal of 68024740 is 4742086.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 67996516 = 168^2 + 8246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68024741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39334 + ... + 41026.

It is an arithmetic number, because the mean of its divisors is an integer number (2365671).

Almost surely, 2^68024740 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 68024740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85164156).

68024740 is an abundant number, since it is smaller than the sum of its proper divisors (102303572).

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

68024740 is a wasteful number, since it uses less digits than its factorization.

68024740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 68024740 is about 8247.7111976596. The cubic root of 68024740 is about 408.2150042620.

The spelling of 68024740 in words is "sixty-eight million, twenty-four thousand, seven hundred forty".