635005213 has 4 divisors (see below), whose sum is σ = 668426560. Its totient is φ = 601583868.

The previous prime is 635005193. The next prime is 635005249. The reversal of 635005213 is 312500536.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-635005213 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 (635005313) 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, 16710645 + ... + 16710682.

It is an arithmetic number, because the mean of its divisors is an integer number (167106640).

Almost surely, 2^635005213 is an apocalyptic number.

It is an amenable number.

635005213 is a deficient number, since it is larger than the sum of its proper divisors (33421347).

635005213 is a wasteful number, since it uses less digits than its factorization.

635005213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33421346.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 635005213 is about 25199.3097722934. The cubic root of 635005213 is about 859.5261554996.

Adding to 635005213 its reverse (312500536), we get a palindrome (947505749).

The spelling of 635005213 in words is "six hundred thirty-five million, five thousand, two hundred thirteen".