320629 has 4 divisors (see below), whose sum is σ = 324576. Its totient is φ = 316684.

The previous prime is 320627. The next prime is 320647. The reversal of 320629 is 926023.

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 320629 - 2¹ = 320627 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 (320627) 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, 1849 + ... + 2014.

It is an arithmetic number, because the mean of its divisors is an integer number (81144).

2³²⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

320629 is a deficient number, since it is larger than the sum of its proper divisors (3947).

320629 is an equidigital number, since it uses as much as digits as its factorization.

320629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 320629 is about 566.2411147206. The cubic root of 320629 is about 68.4438241551.

It can be divided in two parts, 320 and 629, that added together give a palindrome (949).

The spelling of 320629 in words is "three hundred twenty thousand, six hundred twenty-nine".