82085770 has 16 divisors (see below), whose sum is σ = 159120360. Its totient is φ = 30308544.

The previous prime is 82085767. The next prime is 82085771. The reversal of 82085770 is 7758028.

It can be written as a sum of positive squares in 4 ways, for example, as 51538041 + 30547729 = 7179^2 + 5527^2 .

It is not an unprimeable number, because it can be changed into a prime (82085771) 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, 315585 + ... + 315844.

Almost surely, 2^82085770 is an apocalyptic number.

82085770 is a deficient number, since it is larger than the sum of its proper divisors (77034590).

82085770 is a wasteful number, since it uses less digits than its factorization.

82085770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631449.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 82085770 is about 9060.1197563829. The cubic root of 82085770 is about 434.5995698505.

The spelling of 82085770 in words is "eighty-two million, eighty-five thousand, seven hundred seventy".