685369819478 has 32 divisors (see below), whose sum is σ = 1146433292640. Its totient is φ = 305388195840.

The previous prime is 685369819447. The next prime is 685369819483. The reversal of 685369819478 is 874918963586.

685369819478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 926738 + ... + 1493178.

It is an arithmetic number, because the mean of its divisors is an integer number (35826040395).

Almost surely, 2^685369819478 is an apocalyptic number.

685369819478 is a deficient number, since it is larger than the sum of its proper divisors (461063473162).

685369819478 is a wasteful number, since it uses less digits than its factorization.

685369819478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568352.

The product of its digits is 627056640, while the sum is 74.

The spelling of 685369819478 in words is "six hundred eighty-five billion, three hundred sixty-nine million, eight hundred nineteen thousand, four hundred seventy-eight".