68439330 has 80 divisors (see below), whose sum is σ = 193754880. Its totient is φ = 17286048.

The previous prime is 68439313. The next prime is 68439337. The reversal of 68439330 is 3393486.

It is not an unprimeable number, because it can be changed into a prime (68439337) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13167 + ... + 17613.

It is an arithmetic number, because the mean of its divisors is an integer number (2421936).

Almost surely, 2^68439330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68439330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96877440).

68439330 is an abundant number, since it is smaller than the sum of its proper divisors (125315550).

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

68439330 is a wasteful number, since it uses less digits than its factorization.

68439330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485 (or 4476 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 68439330 is about 8272.8066579608. The cubic root of 68439330 is about 409.0426403656.

The spelling of 68439330 in words is "sixty-eight million, four hundred thirty-nine thousand, three hundred thirty".