685410488420 has 24 divisors (see below), whose sum is σ = 1644985172544. Its totient is φ = 234997881696.

The previous prime is 685410488419. The next prime is 685410488447. The reversal of 685410488420 is 24884014586.

It is a super-2 number, since 2×685410488420² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2447894462 + ... + 2447894741.

It is an arithmetic number, because the mean of its divisors is an integer number (68541048856).

Almost surely, 2^685410488420 is an apocalyptic number.

It is an amenable number.

685410488420 is an abundant number, since it is smaller than the sum of its proper divisors (959574684124).

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

685410488420 is a wasteful number, since it uses less digits than its factorization.

685410488420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895789219 (or 4895789217 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 50.

The spelling of 685410488420 in words is "six hundred eighty-five billion, four hundred ten million, four hundred eighty-eight thousand, four hundred twenty".