535657 has 4 divisors (see below), whose sum is σ = 537300. Its totient is φ = 534016.

The previous prime is 535637. The next prime is 535663. The reversal of 535657 is 756535.

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

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 234256 = 549^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 535657 - 2⁷ = 535529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (535607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (134325).

2⁵³⁵⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

535657 is a deficient number, since it is larger than the sum of its proper divisors (1643).

535657 is a wasteful number, since it uses less digits than its factorization.

535657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its digits is 15750, while the sum is 31.

The square root of 535657 is about 731.8859200722. The cubic root of 535657 is about 81.2136310603.

The spelling of 535657 in words is "five hundred thirty-five thousand, six hundred fifty-seven".