535685643 has 20 divisors (see below), whose sum is σ = 800995800. Its totient is φ = 356778432.

The previous prime is 535685641. The next prime is 535685669. The reversal of 535685643 is 346586535.

535685643 is a `hidden beast` number, since 535 + 68 + 56 + 4 + 3 = 666.

It is not a de Polignac number, because 535685643 - 2¹ = 535685641 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (535685641) 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 19 ways as a sum of consecutive naturals, for example, 102508 + ... + 107606.

It is an arithmetic number, because the mean of its divisors is an integer number (40049790).

Almost surely, 2^535685643 is an apocalyptic number.

535685643 is a deficient number, since it is larger than the sum of its proper divisors (265310157).

535685643 is a wasteful number, since it uses less digits than its factorization.

535685643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408 (or 6399 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 535685643 is about 23144.8837326957. The cubic root of 535685643 is about 812.1507860392.

The spelling of 535685643 in words is "five hundred thirty-five million, six hundred eighty-five thousand, six hundred forty-three".