85780570 has 32 divisors (see below), whose sum is σ = 163192320. Its totient is φ = 32398080.

The previous prime is 85780549. The next prime is 85780601. The reversal of 85780570 is 7508758.

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, 15810 + ... + 20530.

It is an arithmetic number, because the mean of its divisors is an integer number (5099760).

Almost surely, 2^85780570 is an apocalyptic number.

85780570 is a deficient number, since it is larger than the sum of its proper divisors (77411750).

85780570 is a wasteful number, since it uses less digits than its factorization.

85780570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4830.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 85780570 is about 9261.7800664883. The cubic root of 85780570 is about 441.0247636679.

The spelling of 85780570 in words is "eighty-five million, seven hundred eighty thousand, five hundred seventy".