634513 has 8 divisors (see below), whose sum is σ = 711360. Its totient is φ = 560880.

The previous prime is 634511. The next prime is 634519. The reversal of 634513 is 315436.

634513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634513 - 2¹ = 634511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (88920).

2⁶³⁴⁵¹³ is an apocalyptic number.

It is an amenable number.

634513 is a deficient number, since it is larger than the sum of its proper divisors (76847).

634513 is a wasteful number, since it uses less digits than its factorization.

634513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607.

The product of its digits is 1080, while the sum is 22.

The square root of 634513 is about 796.5632429381. The cubic root of 634513 is about 85.9304015955.

Adding to 634513 its reverse (315436), we get a palindrome (949949).

The spelling of 634513 in words is "six hundred thirty-four thousand, five hundred thirteen".