634393 has 4 divisors (see below), whose sum is σ = 649908. Its totient is φ = 618880.

The previous prime is 634373. The next prime is 634397. The reversal of 634393 is 393436.

634393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 506944 = 357^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 634393 - 2¹³ = 626201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634397) 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, 7696 + ... + 7777.

It is an arithmetic number, because the mean of its divisors is an integer number (162477).

2⁶³⁴³⁹³ is an apocalyptic number.

It is an amenable number.

634393 is a deficient number, since it is larger than the sum of its proper divisors (15515).

634393 is a wasteful number, since it uses less digits than its factorization.

634393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514.

The product of its digits is 5832, while the sum is 28.

The square root of 634393 is about 796.4879157903. The cubic root of 634393 is about 85.9249841608.

The spelling of 634393 in words is "six hundred thirty-four thousand, three hundred ninety-three".