685629648948 has 24 divisors (see below), whose sum is σ = 1603602532000. Its totient is φ = 228000356640.

The previous prime is 685629648947. The next prime is 685629648973. The reversal of 685629648948 is 849846926586.

It is a self number, because there is not a number n which added to its sum of digits gives 685629648948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685629648947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67852198 + ... + 67862301.

Almost surely, 2^685629648948 is an apocalyptic number.

It is an amenable number.

685629648948 is an abundant number, since it is smaller than the sum of its proper divisors (917972883052).

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

685629648948 is a wasteful number, since it uses less digits than its factorization.

685629648948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135714927 (or 135714925 counting only the distinct ones).

The product of its digits is 1433272320, while the sum is 75.

The spelling of 685629648948 in words is "six hundred eighty-five billion, six hundred twenty-nine million, six hundred forty-eight thousand, nine hundred forty-eight".