68228990 has 16 divisors (see below), whose sum is σ = 130036752. Its totient is φ = 25686144.

The previous prime is 68228969. The next prime is 68229013. The reversal of 68228990 is 9982286.

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 7 ways as a sum of consecutive naturals, for example, 200504 + ... + 200843.

It is an arithmetic number, because the mean of its divisors is an integer number (8127297).

Almost surely, 2^68228990 is an apocalyptic number.

68228990 is a deficient number, since it is larger than the sum of its proper divisors (61807762).

68228990 is a wasteful number, since it uses less digits than its factorization.

68228990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401371.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 68228990 is about 8260.0841400073. The cubic root of 68228990 is about 408.6231626458.

The spelling of 68228990 in words is "sixty-eight million, two hundred twenty-eight thousand, nine hundred ninety".