634613 has 4 divisors (see below), whose sum is σ = 725280. Its totient is φ = 543948.

The previous prime is 634609. The next prime is 634643. The reversal of 634613 is 316436.

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 not a de Polignac number, because 634613 - 2² = 634609 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 (634603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45323 + ... + 45336.

It is an arithmetic number, because the mean of its divisors is an integer number (181320).

2⁶³⁴⁶¹³ is an apocalyptic number.

It is an amenable number.

634613 is a deficient number, since it is larger than the sum of its proper divisors (90667).

634613 is an equidigital number, since it uses as much as digits as its factorization.

634613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90666.

The product of its digits is 1296, while the sum is 23.

The square root of 634613 is about 796.6260101202. The cubic root of 634613 is about 85.9349156027.

The spelling of 634613 in words is "six hundred thirty-four thousand, six hundred thirteen".