68667240 has 64 divisors (see below), whose sum is σ = 206660160. Its totient is φ = 18252800.

The previous prime is 68667229. The next prime is 68667241. The reversal of 68667240 is 4276686.

It is not an unprimeable number, because it can be changed into a prime (68667241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47407 + ... + 48833.

It is an arithmetic number, because the mean of its divisors is an integer number (3229065).

Almost surely, 2^68667240 is an apocalyptic number.

68667240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68667240 is an abundant number, since it is smaller than the sum of its proper divisors (137992920).

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

68667240 is a wasteful number, since it uses less digits than its factorization.

68667240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 68667240 is about 8286.5698573053. The cubic root of 68667240 is about 409.4961886219.

The spelling of 68667240 in words is "sixty-eight million, six hundred sixty-seven thousand, two hundred forty".