68904450 has 72 divisors (see below), whose sum is σ = 194890800. Its totient is φ = 17405280.

The previous prime is 68904427. The next prime is 68904457. The reversal of 68904450 is 5440986.

It is not an unprimeable number, because it can be changed into a prime (68904457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4521 + ... + 12579.

Almost surely, 2^68904450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68904450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97445400).

68904450 is an abundant number, since it is smaller than the sum of its proper divisors (125986350).

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

68904450 is a wasteful number, since it uses less digits than its factorization.

68904450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096 (or 8088 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 68904450 is about 8300.8704362856. The cubic root of 68904450 is about 409.9671796056.

The spelling of 68904450 in words is "sixty-eight million, nine hundred four thousand, four hundred fifty".