68523312 has 160 divisors (see below), whose sum is σ = 212486400. Its totient is φ = 18754560.

The previous prime is 68523271. The next prime is 68523319. The reversal of 68523312 is 21332586.

It is a self number, because there is not a number n which added to its sum of digits gives 68523312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68523319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459814 + ... + 459962.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^68523312 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 68523312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106243200).

68523312 is an abundant number, since it is smaller than the sum of its proper divisors (143963088).

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

68523312 is a wasteful number, since it uses less digits than its factorization.

68523312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 245 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 68523312 is about 8277.8808882467. The cubic root of 68523312 is about 409.2098842461.

Adding to 68523312 its reverse (21332586), we get a palindrome (89855898).

The spelling of 68523312 in words is "sixty-eight million, five hundred twenty-three thousand, three hundred twelve".