68450000 has 90 divisors (see below), whose sum is σ = 170368002. Its totient is φ = 26640000.

The previous prime is 68449999. The next prime is 68450003. The reversal of 68450000 is 5486.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 53114944 + 15335056 = 7288^2 + 3916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68450003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1849982 + ... + 1850018.

Almost surely, 2^68450000 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 68450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85184001).

68450000 is an abundant number, since it is smaller than the sum of its proper divisors (101918002).

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

68450000 is an frugal number, since it uses more digits than its factorization.

68450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 68450000 is about 8273.4515167492. The cubic root of 68450000 is about 409.0638964580.

Adding to 68450000 its reverse (5486), we get a palindrome (68455486).

The spelling of 68450000 in words is "sixty-eight million, four hundred fifty thousand".