68935790 has 32 divisors (see below), whose sum is σ = 154704384. Its totient is φ = 21486240.

The previous prime is 68935759. The next prime is 68935849. The reversal of 68935790 is 9753986.

68935790 is nontrivially palindromic in base 13.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 15 ways as a sum of consecutive naturals, for example, 43994 + ... + 45533.

It is an arithmetic number, because the mean of its divisors is an integer number (4834512).

Almost surely, 2^68935790 is an apocalyptic number.

68935790 is an abundant number, since it is smaller than the sum of its proper divisors (85768594).

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

68935790 is a wasteful number, since it uses less digits than its factorization.

68935790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89552.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 68935790 is about 8302.7579755163. The cubic root of 68935790 is about 410.0293256835.

The spelling of 68935790 in words is "sixty-eight million, nine hundred thirty-five thousand, seven hundred ninety".