685095252578 has 16 divisors (see below), whose sum is σ = 1140066061920. Its totient is φ = 306128848800.

The previous prime is 685095252571. The next prime is 685095252581. The reversal of 685095252578 is 875252590586.

It is a self number, because there is not a number n which added to its sum of digits gives 685095252578.

It is not an unprimeable number, because it can be changed into a prime (685095252571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263902883 + ... + 263905478.

It is an arithmetic number, because the mean of its divisors is an integer number (71254128870).

Almost surely, 2^685095252578 is an apocalyptic number.

685095252578 is a deficient number, since it is larger than the sum of its proper divisors (454970809342).

685095252578 is a wasteful number, since it uses less digits than its factorization.

685095252578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527808433.

The product of its (nonzero) digits is 60480000, while the sum is 62.

The spelling of 685095252578 in words is "six hundred eighty-five billion, ninety-five million, two hundred fifty-two thousand, five hundred seventy-eight".