685332733732 has 6 divisors (see below), whose sum is σ = 1199332284038. Its totient is φ = 342666366864.

The previous prime is 685332733661. The next prime is 685332733733. The reversal of 685332733732 is 237337233586.

It can be written as a sum of positive squares in only one way, i.e., 681126692416 + 4206041316 = 825304^2 + 64854^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 685332733732.

It is not an unprimeable number, because it can be changed into a prime (685332733733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85666591713 + ... + 85666591720.

Almost surely, 2^685332733732 is an apocalyptic number.

It is an amenable number.

685332733732 is a deficient number, since it is larger than the sum of its proper divisors (513999550306).

685332733732 is a wasteful number, since it uses less digits than its factorization.

685332733732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171333183437 (or 171333183435 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 52.

The spelling of 685332733732 in words is "six hundred eighty-five billion, three hundred thirty-two million, seven hundred thirty-three thousand, seven hundred thirty-two".