685084753930 has 16 divisors (see below), whose sum is σ = 1233165345120. Its totient is φ = 274031059792.

The previous prime is 685084753877. The next prime is 685084753931. The reversal of 685084753930 is 39357480586.

It is a super-2 number, since 2×685084753930² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685084753931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852981 + ... + 1448359.

It is an arithmetic number, because the mean of its divisors is an integer number (77072834070).

Almost surely, 2^685084753930 is an apocalyptic number.

685084753930 is a deficient number, since it is larger than the sum of its proper divisors (548080591190).

685084753930 is a wasteful number, since it uses less digits than its factorization.

685084753930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710453.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 685084753930 in words is "six hundred eighty-five billion, eighty-four million, seven hundred fifty-three thousand, nine hundred thirty".