685594542276 has 72 divisors (see below), whose sum is σ = 1999835720064. Its totient is φ = 193982359680.

The previous prime is 685594542253. The next prime is 685594542371. The reversal of 685594542276 is 672245495586.

685594542276 is a `hidden beast` number, since 6 + 8 + 55 + 94 + 5 + 422 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 13180905 + ... + 13232816.

It is an arithmetic number, because the mean of its divisors is an integer number (27775496112).

Almost surely, 2^685594542276 is an apocalyptic number.

It is an amenable number.

685594542276 is an abundant number, since it is smaller than the sum of its proper divisors (1314241177788).

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

685594542276 is a wasteful number, since it uses less digits than its factorization.

685594542276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26413841 (or 26413836 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 63.

The spelling of 685594542276 in words is "six hundred eighty-five billion, five hundred ninety-four million, five hundred forty-two thousand, two hundred seventy-six".