68069904 has 120 divisors (see below), whose sum is σ = 213789888. Its totient is φ = 18278400.

The previous prime is 68069891. The next prime is 68069927. The reversal of 68069904 is 40996086.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 96754 + ... + 97454.

Almost surely, 2^68069904 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 68069904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106894944).

68069904 is an abundant number, since it is smaller than the sum of its proper divisors (145719984).

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

68069904 is a wasteful number, since it uses less digits than its factorization.

68069904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 68069904 is about 8250.4487150700. The cubic root of 68069904 is about 408.3053270069.

The spelling of 68069904 in words is "sixty-eight million, sixty-nine thousand, nine hundred four".