634318 has 4 divisors (see below), whose sum is σ = 951480. Its totient is φ = 317158.

The previous prime is 634313. The next prime is 634327. The reversal of 634318 is 813436.

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

It is a junction number, because it is equal to n+sod(n) for n = 634292 and 634301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634313) by changing a digit.

634318 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158578 + ... + 158581.

It is an arithmetic number, because the mean of its divisors is an integer number (237870).

2⁶³⁴³¹⁸ is an apocalyptic number.

634318 is a deficient number, since it is larger than the sum of its proper divisors (317162).

634318 is a wasteful number, since it uses less digits than its factorization.

634318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317161.

The product of its digits is 1728, while the sum is 25.

The square root of 634318 is about 796.4408327051. The cubic root of 634318 is about 85.9215979171.

The spelling of 634318 in words is "six hundred thirty-four thousand, three hundred eighteen".