68660000 has 60 divisors (see below), whose sum is σ = 168963102. Its totient is φ = 27456000.

The previous prime is 68659999. The next prime is 68660017. The reversal of 68660000 is 6686.

It can be written as a sum of positive squares in 5 ways, for example, as 35344 + 68624656 = 188^2 + 8284^2 .

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 18284 + ... + 21716.

Almost surely, 2^68660000 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 68660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84481551).

68660000 is an abundant number, since it is smaller than the sum of its proper divisors (100303102).

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

68660000 is an equidigital number, since it uses as much as digits as its factorization.

68660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 68660000 is about 8286.1329943466. The cubic root of 68660000 is about 409.4817962342.

Adding to 68660000 its reverse (6686), we get a palindrome (68666686).

The spelling of 68660000 in words is "sixty-eight million, six hundred sixty thousand".