635213 has 4 divisors (see below), whose sum is σ = 650748. Its totient is φ = 619680.

The previous prime is 635207. The next prime is 635249. The reversal of 635213 is 312536.

635213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 29929 + 605284 = 173^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 635213 - 2⁴ = 635197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635203) 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, 7706 + ... + 7787.

It is an arithmetic number, because the mean of its divisors is an integer number (162687).

2⁶³⁵²¹³ is an apocalyptic number.

It is an amenable number.

635213 is a deficient number, since it is larger than the sum of its proper divisors (15535).

635213 is a wasteful number, since it uses less digits than its factorization.

635213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15534.

The product of its digits is 540, while the sum is 20.

The square root of 635213 is about 797.0025094063. The cubic root of 635213 is about 85.9619896927.

Adding to 635213 its reverse (312536), we get a palindrome (947749).

It can be divided in two parts, 635 and 213, that added together give a palindrome (848).

The spelling of 635213 in words is "six hundred thirty-five thousand, two hundred thirteen".