68553216 has 240 divisors, whose sum is σ = 223423200. Its totient is φ = 20901888.

The previous prime is 68553181. The next prime is 68553227. The reversal of 68553216 is 61235586.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 2363890 + ... + 2363918.

It is an arithmetic number, because the mean of its divisors is an integer number (930930).

Almost surely, 2^68553216 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 68553216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111711600).

68553216 is an abundant number, since it is smaller than the sum of its proper divisors (154869984).

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

68553216 is an equidigital number, since it uses as much as digits as its factorization.

68553216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 53 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 68553216 is about 8279.6869506039. The cubic root of 68553216 is about 409.2694028359.

The spelling of 68553216 in words is "sixty-eight million, five hundred fifty-three thousand, two hundred sixteen".