68745216 has 96 divisors (see below), whose sum is σ = 187125120. Its totient is φ = 22437888.

The previous prime is 68745203. The next prime is 68745221. The reversal of 68745216 is 61254786.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 411565 + ... + 411731.

It is an arithmetic number, because the mean of its divisors is an integer number (1949220).

Almost surely, 2^68745216 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 68745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93562560).

68745216 is an abundant number, since it is smaller than the sum of its proper divisors (118379904).

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

68745216 is a wasteful number, since it uses less digits than its factorization.

68745216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 239 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 68745216 is about 8291.2734848152. The cubic root of 68745216 is about 409.6511329394.

It can be divided in two parts, 6874 and 5216, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 68745216 in words is "sixty-eight million, seven hundred forty-five thousand, two hundred sixteen".