68828990 has 16 divisors (see below), whose sum is σ = 127889280. Its totient is φ = 26643360.

The previous prime is 68828989. The next prime is 68828993. The reversal of 68828990 is 9982886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68828993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110705 + ... + 111324.

It is an arithmetic number, because the mean of its divisors is an integer number (7993080).

Almost surely, 2^68828990 is an apocalyptic number.

68828990 is a deficient number, since it is larger than the sum of its proper divisors (59060290).

68828990 is a wasteful number, since it uses less digits than its factorization.

68828990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222067.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 68828990 is about 8296.3238847094. The cubic root of 68828990 is about 409.8174678266.

The spelling of 68828990 in words is "sixty-eight million, eight hundred twenty-eight thousand, nine hundred ninety".