685307575090 has 32 divisors (see below), whose sum is σ = 1252044385920. Its totient is φ = 270014494464.

The previous prime is 685307575087. The next prime is 685307575091. The reversal of 685307575090 is 90575703586.

It is not an unprimeable number, because it can be changed into a prime (685307575091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17959051 + ... + 17997169.

It is an arithmetic number, because the mean of its divisors is an integer number (39126387060).

Almost surely, 2^685307575090 is an apocalyptic number.

685307575090 is a deficient number, since it is larger than the sum of its proper divisors (566736810830).

685307575090 is a wasteful number, since it uses less digits than its factorization.

685307575090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65026.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 685307575090 in words is "six hundred eighty-five billion, three hundred seven million, five hundred seventy-five thousand, ninety".