685050105 has 16 divisors (see below), whose sum is σ = 1160555904. Its totient is φ = 343868160.

The previous prime is 685050097. The next prime is 685050109. The reversal of 685050105 is 501050586.

It is a happy number.

It is not a de Polignac number, because 685050105 - 2³ = 685050097 is a prime.

It is a super-2 number, since 2×685050105² = 938587292721022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685050109) 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, 1342981 + ... + 1343490.

It is an arithmetic number, because the mean of its divisors is an integer number (72534744).

Almost surely, 2^685050105 is an apocalyptic number.

It is an amenable number.

685050105 is a deficient number, since it is larger than the sum of its proper divisors (475505799).

685050105 is a wasteful number, since it uses less digits than its factorization.

685050105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686496.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 685050105 is about 26173.4618459232. The cubic root of 685050105 is about 881.5374745437.

The spelling of 685050105 in words is "six hundred eighty-five million, fifty thousand, one hundred five".