852635643 has 4 divisors (see below), whose sum is σ = 1136847528. Its totient is φ = 568423760.

The previous prime is 852635633. The next prime is 852635657. The reversal of 852635643 is 346536258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 852635643 - 2¹² = 852631547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 852635595 and 852635604.

It is not an unprimeable number, because it can be changed into a prime (852635603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142105938 + ... + 142105943.

It is an arithmetic number, because the mean of its divisors is an integer number (284211882).

Almost surely, 2^852635643 is an apocalyptic number.

852635643 is a deficient number, since it is larger than the sum of its proper divisors (284211885).

852635643 is a wasteful number, since it uses less digits than its factorization.

852635643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284211884.

The product of its digits is 518400, while the sum is 42.

The square root of 852635643 is about 29199.9253937403. The cubic root of 852635643 is about 948.2463096652.

The spelling of 852635643 in words is "eight hundred fifty-two million, six hundred thirty-five thousand, six hundred forty-three".