320634 has 24 divisors (see below), whose sum is σ = 711360. Its totient is φ = 104328.

The previous prime is 320627. The next prime is 320647. The reversal of 320634 is 436023.

320634 is a `hidden beast` number, since 32 + 0 + 634 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320634.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 657 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (29640).

2³²⁰⁶³⁴ is an apocalyptic number.

320634 is an abundant number, since it is smaller than the sum of its proper divisors (390726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320634 is a wasteful number, since it uses less digits than its factorization.

320634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320634 is about 566.2455297837. The cubic root of 320634 is about 68.4441799322. Note that the first 3 decimals are identical.

Adding to 320634 its reverse (436023), we get a palindrome (756657).

It can be divided in two parts, 3206 and 34, that added together give a triangular number (3240 = T₈₀).

The spelling of 320634 in words is "three hundred twenty thousand, six hundred thirty-four".