685247068366 has 32 divisors (see below), whose sum is σ = 1231863330240. Its totient is φ = 279666245376.

The previous prime is 685247068361. The next prime is 685247068367. The reversal of 685247068366 is 663860742586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685247068361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11530641 + ... + 11589916.

It is an arithmetic number, because the mean of its divisors is an integer number (38495729070).

Almost surely, 2^685247068366 is an apocalyptic number.

685247068366 is a deficient number, since it is larger than the sum of its proper divisors (546616261874).

685247068366 is a wasteful number, since it uses less digits than its factorization.

685247068366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23120668.

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 685247068366 in words is "six hundred eighty-five billion, two hundred forty-seven million, sixty-eight thousand, three hundred sixty-six".