685285733 has 4 divisors (see below), whose sum is σ = 747584448. Its totient is φ = 622987020.

The previous prime is 685285723. The next prime is 685285739. The reversal of 685285733 is 337582586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 685285733 - 2¹⁰ = 685284709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685285739) 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 3 ways as a sum of consecutive naturals, for example, 31149341 + ... + 31149362.

It is an arithmetic number, because the mean of its divisors is an integer number (186896112).

Almost surely, 2^685285733 is an apocalyptic number.

It is an amenable number.

685285733 is a deficient number, since it is larger than the sum of its proper divisors (62298715).

685285733 is a wasteful number, since it uses less digits than its factorization.

685285733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62298714.

The product of its digits is 1209600, while the sum is 47.

The square root of 685285733 is about 26177.9627358586. The cubic root of 685285733 is about 881.6385333811.

The spelling of 685285733 in words is "six hundred eighty-five million, two hundred eighty-five thousand, seven hundred thirty-three".