685108605 has 8 divisors (see below), whose sum is σ = 1096173792. Its totient is φ = 365391248.

The previous prime is 685108603. The next prime is 685108639. The reversal of 685108605 is 506801586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685108605 - 2¹ = 685108603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685108601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22836939 + ... + 22836968.

It is an arithmetic number, because the mean of its divisors is an integer number (137021724).

Almost surely, 2^685108605 is an apocalyptic number.

It is an amenable number.

685108605 is a deficient number, since it is larger than the sum of its proper divisors (411065187).

685108605 is a wasteful number, since it uses less digits than its factorization.

685108605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45673915.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 685108605 is about 26174.5793662477. The cubic root of 685108605 is about 881.5625668564.

The spelling of 685108605 in words is "six hundred eighty-five million, one hundred eight thousand, six hundred five".