68587520 has 104 divisors (see below), whose sum is σ = 175156344. Its totient is φ = 25690112.

The previous prime is 68587513. The next prime is 68587553. The reversal of 68587520 is 2578586.

It can be written as a sum of positive squares in 4 ways, for example, as 34668544 + 33918976 = 5888^2 + 5824^2 .

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, 348062 + ... + 348258.

Almost surely, 2^68587520 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 68587520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87578172).

68587520 is an abundant number, since it is smaller than the sum of its proper divisors (106568824).

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

68587520 is a wasteful number, since it uses less digits than its factorization.

68587520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 68587520 is about 8281.7582674212. The cubic root of 68587520 is about 409.3376575304.

The spelling of 68587520 in words is "sixty-eight million, five hundred eighty-seven thousand, five hundred twenty".