685968073 has 8 divisors (see below), whose sum is σ = 785191680. Its totient is φ = 587051520.

The previous prime is 685968067. The next prime is 685968083. The reversal of 685968073 is 370869586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685968073 - 2²¹ = 683870921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 685968073.

It is not an unprimeable number, because it can be changed into a prime (685968013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71953 + ... + 80926.

It is an arithmetic number, because the mean of its divisors is an integer number (98148960).

Almost surely, 2^685968073 is an apocalyptic number.

It is an amenable number.

685968073 is a deficient number, since it is larger than the sum of its proper divisors (99223607).

685968073 is a wasteful number, since it uses less digits than its factorization.

685968073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153527.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 685968073 is about 26190.9922110637. The cubic root of 685968073 is about 881.9310525715.

The spelling of 685968073 in words is "six hundred eighty-five million, nine hundred sixty-eight thousand, seventy-three".