68904330 has 64 divisors (see below), whose sum is σ = 183513600. Its totient is φ = 16416320.

The previous prime is 68904307. The next prime is 68904373. The reversal of 68904330 is 3340986.

It is a super-3 number, since 3×68904330³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68904291 and 68904300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17701 + ... + 21239.

It is an arithmetic number, because the mean of its divisors is an integer number (2867400).

Almost surely, 2^68904330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68904330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91756800).

68904330 is an abundant number, since it is smaller than the sum of its proper divisors (114609270).

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

68904330 is a wasteful number, since it uses less digits than its factorization.

68904330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 68904330 is about 8300.8632081248. The cubic root of 68904330 is about 409.9669416138.

The spelling of 68904330 in words is "sixty-eight million, nine hundred four thousand, three hundred thirty".