68520522 has 48 divisors (see below), whose sum is σ = 163749600. Its totient is φ = 19045152.

The previous prime is 68520503. The next prime is 68520539. The reversal of 68520522 is 22502586.

It is a self number, because there is not a number n which added to its sum of digits gives 68520522.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7729 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (3411450).

Almost surely, 2^68520522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68520522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81874800).

68520522 is an abundant number, since it is smaller than the sum of its proper divisors (95229078).

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

68520522 is a wasteful number, since it uses less digits than its factorization.

68520522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355 (or 6348 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 68520522 is about 8277.7123651405. The cubic root of 68520522 is about 409.2043303645.

The spelling of 68520522 in words is "sixty-eight million, five hundred twenty thousand, five hundred twenty-two".