685101055 has 12 divisors (see below), whose sum is σ = 837942840. Its totient is φ = 537728672.

The previous prime is 685101047. The next prime is 685101059. The reversal of 685101055 is 550101586.

It is not a de Polignac number, because 685101055 - 2³ = 685101047 is a prime.

It is a super-2 number, since 2×685101055² = 938726911124226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685101059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10345 + ... + 38434.

It is an arithmetic number, because the mean of its divisors is an integer number (69828570).

Almost surely, 2^685101055 is an apocalyptic number.

685101055 is a deficient number, since it is larger than the sum of its proper divisors (152841785).

685101055 is an equidigital number, since it uses as much as digits as its factorization.

685101055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48890 (or 48837 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 685101055 is about 26174.4351419472. The cubic root of 685101055 is about 881.5593285271.

The spelling of 685101055 in words is "six hundred eighty-five million, one hundred one thousand, fifty-five".