685293730 has 16 divisors (see below), whose sum is σ = 1345667904. Its totient is φ = 249197680.

The previous prime is 685293701. The next prime is 685293731. The reversal of 685293730 is 37392586.

It is not an unprimeable number, because it can be changed into a prime (685293731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3114862 + ... + 3115081.

It is an arithmetic number, because the mean of its divisors is an integer number (84104244).

Almost surely, 2^685293730 is an apocalyptic number.

685293730 is a deficient number, since it is larger than the sum of its proper divisors (660374174).

685293730 is a wasteful number, since it uses less digits than its factorization.

685293730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229961.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 685293730 is about 26178.1154783915. The cubic root of 685293730 is about 881.6419628196.

The spelling of 685293730 in words is "six hundred eighty-five million, two hundred ninety-three thousand, seven hundred thirty".