75780285 has 32 divisors (see below), whose sum is σ = 144599040. Its totient is φ = 33135168.

The previous prime is 75780269. The next prime is 75780307. The reversal of 75780285 is 58208757.

It is a happy number.

It is not a de Polignac number, because 75780285 - 2⁴ = 75780269 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 13275 + ... + 18104.

It is an arithmetic number, because the mean of its divisors is an integer number (4518720).

Almost surely, 2^75780285 is an apocalyptic number.

It is an amenable number.

75780285 is a deficient number, since it is larger than the sum of its proper divisors (68818755).

75780285 is a wasteful number, since it uses less digits than its factorization.

75780285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31417.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 75780285 is about 8705.1872466938. The cubic root of 75780285 is about 423.1737740933.

The spelling of 75780285 in words is "seventy-five million, seven hundred eighty thousand, two hundred eighty-five".