685382689380 has 48 divisors (see below), whose sum is σ = 1920780598464. Its totient is φ = 182605948800.

The previous prime is 685382689367. The next prime is 685382689391. The reversal of 685382689380 is 83986283586.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5018571 + ... + 5153330.

It is an arithmetic number, because the mean of its divisors is an integer number (40016262468).

Almost surely, 2^685382689380 is an apocalyptic number.

685382689380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685382689380 is an abundant number, since it is smaller than the sum of its proper divisors (1235397909084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685382689380 is a wasteful number, since it uses less digits than its factorization.

685382689380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173036 (or 10173034 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 66.

The spelling of 685382689380 in words is "six hundred eighty-five billion, three hundred eighty-two million, six hundred eighty-nine thousand, three hundred eighty".