685745875 has 16 divisors (see below), whose sum is σ = 857918880. Its totient is φ = 547245600.

The previous prime is 685745873. The next prime is 685745887. The reversal of 685745875 is 578547586.

It is not a de Polignac number, because 685745875 - 2¹ = 685745873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685745873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45829 + ... + 58921.

It is an arithmetic number, because the mean of its divisors is an integer number (53619930).

Almost surely, 2^685745875 is an apocalyptic number.

685745875 is a deficient number, since it is larger than the sum of its proper divisors (172173005).

685745875 is a wasteful number, since it uses less digits than its factorization.

685745875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13527 (or 13517 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 55.

The square root of 685745875 is about 26186.7499892598. The cubic root of 685745875 is about 881.8358175860.

The spelling of 685745875 in words is "six hundred eighty-five million, seven hundred forty-five thousand, eight hundred seventy-five".