853447685 has 16 divisors (see below), whose sum is σ = 1102766400. Its totient is φ = 631700736.

The previous prime is 853447663. The next prime is 853447687. The reversal of 853447685 is 586744358.

It is a cyclic number.

It is not a de Polignac number, because 853447685 - 2⁸ = 853447429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853447687) 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, 80075 + ... + 90104.

It is an arithmetic number, because the mean of its divisors is an integer number (68922900).

Almost surely, 2^853447685 is an apocalyptic number.

853447685 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

853447685 is a deficient number, since it is larger than the sum of its proper divisors (249318715).

853447685 is a wasteful number, since it uses less digits than its factorization.

853447685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170260.

The product of its digits is 3225600, while the sum is 50.

The square root of 853447685 is about 29213.8269488953. The cubic root of 853447685 is about 948.5472477089.

The spelling of 853447685 in words is "eight hundred fifty-three million, four hundred forty-seven thousand, six hundred eighty-five".