68047340 has 48 divisors (see below), whose sum is σ = 154284480. Its totient is φ = 25132800.

The previous prime is 68047339. The next prime is 68047351. The reversal of 68047340 is 4374086.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68047297 and 68047306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10790 + ... + 15890.

It is an arithmetic number, because the mean of its divisors is an integer number (3214260).

Almost surely, 2^68047340 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 68047340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77142240).

68047340 is an abundant number, since it is smaller than the sum of its proper divisors (86237140).

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

68047340 is a wasteful number, since it uses less digits than its factorization.

68047340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162 (or 5160 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 68047340 is about 8249.0811609536. The cubic root of 68047340 is about 408.2602066281.

The spelling of 68047340 in words is "sixty-eight million, forty-seven thousand, three hundred forty".