685101087 has 24 divisors (see below), whose sum is σ = 1080713088. Its totient is φ = 414766800.

The previous prime is 685101083. The next prime is 685101143. The reversal of 685101087 is 780101586.

685101087 is a `hidden beast` number, since 68 + 510 + 1 + 0 + 87 = 666.

685101087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 685101087 - 2² = 685101083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685101083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104838 + ... + 111180.

It is an arithmetic number, because the mean of its divisors is an integer number (45029712).

Almost surely, 2^685101087 is an apocalyptic number.

685101087 is a deficient number, since it is larger than the sum of its proper divisors (395612001).

685101087 is a wasteful number, since it uses less digits than its factorization.

685101087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451 (or 7448 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 685101087 is about 26174.4357532307. The cubic root of 685101087 is about 881.5593422525.

The spelling of 685101087 in words is "six hundred eighty-five million, one hundred one thousand, eighty-seven".