685571067 has 12 divisors (see below), whose sum is σ = 1015862440. Its totient is φ = 456956676.

The previous prime is 685571041. The next prime is 685571111. The reversal of 685571067 is 760175586.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 685571067 - 2¹⁶ = 685505531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685571017) 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, 133534 + ... + 138572.

Almost surely, 2^685571067 is an apocalyptic number.

685571067 is a deficient number, since it is larger than the sum of its proper divisors (330291373).

685571067 is an frugal number, since it uses more digits than its factorization.

685571067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 685571067 is about 26183.4120580187. The cubic root of 685571067 is about 881.7608796915.

The spelling of 685571067 in words is "six hundred eighty-five million, five hundred seventy-one thousand, sixty-seven".