621233 has 4 divisors (see below), whose sum is σ = 623220. Its totient is φ = 619248.

The previous prime is 621227. The next prime is 621239. The reversal of 621233 is 332126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332126 = 2 ⋅166063.

It is an interprime number because it is at equal distance from previous prime (621227) and next prime (621239).

It can be written as a sum of positive squares in 2 ways, for example, as 135424 + 485809 = 368^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 621233 - 2⁴ = 621217 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (621239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (155805).

2⁶²¹²³³ is an apocalyptic number.

It is an amenable number.

621233 is a deficient number, since it is larger than the sum of its proper divisors (1987).

621233 is a wasteful number, since it uses less digits than its factorization.

621233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986.

The product of its digits is 216, while the sum is 17.

The square root of 621233 is about 788.1833543028. The cubic root of 621233 is about 85.3266782869.

Adding to 621233 its reverse (332126), we get a palindrome (953359).

It can be divided in two parts, 62123 and 3, that added together give a palindrome (62126).

The spelling of 621233 in words is "six hundred twenty-one thousand, two hundred thirty-three".