68428785 has 16 divisors (see below), whose sum is σ = 115248960. Its totient is φ = 34574400.

The previous prime is 68428753. The next prime is 68428793. The reversal of 68428785 is 58782486.

It is not a de Polignac number, because 68428785 - 2⁵ = 68428753 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119766 + ... + 120335.

It is an arithmetic number, because the mean of its divisors is an integer number (7203060).

Almost surely, 2^68428785 is an apocalyptic number.

It is an amenable number.

68428785 is a deficient number, since it is larger than the sum of its proper divisors (46820175).

68428785 is a wasteful number, since it uses less digits than its factorization.

68428785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240128.

The product of its digits is 860160, while the sum is 48.

The square root of 68428785 is about 8272.1693043603. The cubic root of 68428785 is about 409.0216311194.

The spelling of 68428785 in words is "sixty-eight million, four hundred twenty-eight thousand, seven hundred eighty-five".