685548782 has 12 divisors (see below), whose sum is σ = 1054021128. Its totient is φ = 334412400.

The previous prime is 685548781. The next prime is 685548791. The reversal of 685548782 is 287845586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685548781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98594 + ... + 105317.

It is an arithmetic number, because the mean of its divisors is an integer number (87835094).

Almost surely, 2^685548782 is an apocalyptic number.

685548782 is a deficient number, since it is larger than the sum of its proper divisors (368472346).

685548782 is a wasteful number, since it uses less digits than its factorization.

685548782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203995 (or 203954 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 53.

The square root of 685548782 is about 26182.9864988698. The cubic root of 685548782 is about 881.7513254891.

The spelling of 685548782 in words is "six hundred eighty-five million, five hundred forty-eight thousand, seven hundred eighty-two".