68287892 has 12 divisors (see below), whose sum is σ = 120306900. Its totient is φ = 33914496.

The previous prime is 68287889. The next prime is 68287927. The reversal of 68287892 is 29878286.

It can be written as a sum of positive squares in 2 ways, for example, as 37773316 + 30514576 = 6146^2 + 5524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68287892.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 56693 + ... + 57884.

It is an arithmetic number, because the mean of its divisors is an integer number (10025575).

Almost surely, 2^68287892 is an apocalyptic number.

It is an amenable number.

68287892 is a deficient number, since it is larger than the sum of its proper divisors (52019008).

68287892 is a wasteful number, since it uses less digits than its factorization.

68287892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114730 (or 114728 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 68287892 is about 8263.6488308737. The cubic root of 68287892 is about 408.7407167758.

The spelling of 68287892 in words is "sixty-eight million, two hundred eighty-seven thousand, eight hundred ninety-two".