68840316 has 72 divisors (see below), whose sum is σ = 181424880. Its totient is φ = 21982464.

The previous prime is 68840309. The next prime is 68840329. The reversal of 68840316 is 61304886.

It is a happy number.

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

It is a congruent number.

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, 243111 + ... + 243393.

It is an arithmetic number, because the mean of its divisors is an integer number (2519790).

Almost surely, 2^68840316 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 68840316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90712440).

68840316 is an abundant number, since it is smaller than the sum of its proper divisors (112584564).

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

68840316 is a wasteful number, since it uses less digits than its factorization.

68840316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 68840316 is about 8297.0064481113. The cubic root of 68840316 is about 409.8399454583.

The spelling of 68840316 in words is "sixty-eight million, eight hundred forty thousand, three hundred sixteen".