634381 has 8 divisors (see below), whose sum is σ = 700128. Its totient is φ = 570000.

The previous prime is 634373. The next prime is 634397. The reversal of 634381 is 183436.

634381 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 634381 - 2³ = 634373 is a prime.

It is a super-2 number, since 2×634381² = 804878506322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634301) 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, 826 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (87516).

2⁶³⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

634381 is a deficient number, since it is larger than the sum of its proper divisors (65747).

634381 is a wasteful number, since it uses less digits than its factorization.

634381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

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

The square root of 634381 is about 796.4803826837. The cubic root of 634381 is about 85.9244423797.

It can be divided in two parts, 63 and 4381, that added together give a palindrome (4444).

The spelling of 634381 in words is "six hundred thirty-four thousand, three hundred eighty-one".