685420585 has 8 divisors (see below), whose sum is σ = 858265920. Its totient is φ = 524495664.

The previous prime is 685420553. The next prime is 685420609. The reversal of 685420585 is 585024586.

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 685420585 - 2⁵ = 685420553 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2979975 + ... + 2980204.

It is an arithmetic number, because the mean of its divisors is an integer number (107283240).

Almost surely, 2^685420585 is an apocalyptic number.

It is an amenable number.

685420585 is a deficient number, since it is larger than the sum of its proper divisors (172845335).

685420585 is a wasteful number, since it uses less digits than its factorization.

685420585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960207.

The product of its (nonzero) digits is 384000, while the sum is 43.

The square root of 685420585 is about 26180.5382870559. The cubic root of 685420585 is about 881.6963598303.

The spelling of 685420585 in words is "six hundred eighty-five million, four hundred twenty thousand, five hundred eighty-five".