685784082 has 16 divisors (see below), whose sum is σ = 1394053632. Its totient is φ = 224847120.

The previous prime is 685784059. The next prime is 685784087. The reversal of 685784082 is 280487586.

It is not an unprimeable number, because it can be changed into a prime (685784087) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 936498 + ... + 937229.

It is an arithmetic number, because the mean of its divisors is an integer number (87128352).

Almost surely, 2^685784082 is an apocalyptic number.

685784082 is an abundant number, since it is smaller than the sum of its proper divisors (708269550).

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

685784082 is a wasteful number, since it uses less digits than its factorization.

685784082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873793.

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

The square root of 685784082 is about 26187.4794892521. The cubic root of 685784082 is about 881.8521947292.

The spelling of 685784082 in words is "six hundred eighty-five million, seven hundred eighty-four thousand, eighty-two".