320626 has 4 divisors (see below), whose sum is σ = 480942. Its totient is φ = 160312.

The previous prime is 320611. The next prime is 320627. The reversal of 320626 is 626023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 626023 = 29 ⋅21587.

It can be written as a sum of positive squares in only one way, i.e., 201601 + 119025 = 449^2 + 345^2 .

It is a plaindrome in base 12.

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 as a sum of consecutive naturals, namely, 80155 + ... + 80158.

2³²⁰⁶²⁶ is an apocalyptic number.

320626 is a deficient number, since it is larger than the sum of its proper divisors (160316).

320626 is a wasteful number, since it uses less digits than its factorization.

320626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160315.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320626 is about 566.2384656662. The cubic root of 320626 is about 68.4436106871.

Adding to 320626 its reverse (626023), we get a palindrome (946649).

It can be divided in two parts, 320 and 626, that added together give a triangular number (946 = T₄₃).

The spelling of 320626 in words is "three hundred twenty thousand, six hundred twenty-six".