68037520 has 40 divisors (see below), whose sum is σ = 159224184. Its totient is φ = 27036672.

The previous prime is 68037517. The next prime is 68037551. The reversal of 68037520 is 2573086.

It can be written as a sum of positive squares in 4 ways, for example, as 73984 + 67963536 = 272^2 + 8244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9852 + ... + 15268.

Almost surely, 2^68037520 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 68037520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79612092).

68037520 is an abundant number, since it is smaller than the sum of its proper divisors (91186664).

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

68037520 is a wasteful number, since it uses less digits than its factorization.

68037520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587 (or 5581 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 68037520 is about 8248.4859216707. The cubic root of 68037520 is about 408.2405668298.

The spelling of 68037520 in words is "sixty-eight million, thirty-seven thousand, five hundred twenty".