685032105 has 16 divisors (see below), whose sum is σ = 1102178880. Its totient is φ = 363307968.

The previous prime is 685032041. The next prime is 685032109. The reversal of 685032105 is 501230586.

It is not a de Polignac number, because 685032105 - 2⁶ = 685032041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685032109) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 124882 + ... + 130251.

It is an arithmetic number, because the mean of its divisors is an integer number (68886180).

Almost surely, 2^685032105 is an apocalyptic number.

It is an amenable number.

685032105 is a deficient number, since it is larger than the sum of its proper divisors (417146775).

685032105 is a wasteful number, since it uses less digits than its factorization.

685032105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255320.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 685032105 is about 26173.1179839162. The cubic root of 685032105 is about 881.5297535447.

The spelling of 685032105 in words is "six hundred eighty-five million, thirty-two thousand, one hundred five".