68344320 has 160 divisors (see below), whose sum is σ = 238645440. Its totient is φ = 16547840.

The previous prime is 68344307. The next prime is 68344327. The reversal of 68344320 is 2344386.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (68344327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84076 + ... + 84884.

It is an arithmetic number, because the mean of its divisors is an integer number (1491534).

Almost surely, 2^68344320 is an apocalyptic number.

68344320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68344320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119322720).

68344320 is an abundant number, since it is smaller than the sum of its proper divisors (170301120).

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

68344320 is a wasteful number, since it uses less digits than its factorization.

68344320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 68344320 is about 8267.0623561214. The cubic root of 68344320 is about 408.8532700192.

The spelling of 68344320 in words is "sixty-eight million, three hundred forty-four thousand, three hundred twenty".