535653 has 20 divisors (see below), whose sum is σ = 849420. Its totient is φ = 335232.

The previous prime is 535637. The next prime is 535663. The reversal of 535653 is 356535.

It is a happy number.

535653 is a `hidden beast` number, since 5 + 3 + 5 + 653 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 272484 + 263169 = 522^2 + 513^2 .

It is not a de Polignac number, because 535653 - 2⁴ = 535637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535663) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1183 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (42471).

2⁵³⁵⁶⁵³ is an apocalyptic number.

It is an amenable number.

535653 is a deficient number, since it is larger than the sum of its proper divisors (313767).

535653 is a wasteful number, since it uses less digits than its factorization.

535653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 409 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 535653 is about 731.8831874008. The cubic root of 535653 is about 81.2134289065.

The spelling of 535653 in words is "five hundred thirty-five thousand, six hundred fifty-three".