621273 has 8 divisors (see below), whose sum is σ = 848736. Its totient is φ = 404000.

The previous prime is 621259. The next prime is 621289. The reversal of 621273 is 372126.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 621273 - 2⁵ = 621241 is a prime.

621273 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (621223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403 + ... + 2648.

It is an arithmetic number, because the mean of its divisors is an integer number (106092).

2⁶²¹²⁷³ is an apocalyptic number.

It is an amenable number.

621273 is a deficient number, since it is larger than the sum of its proper divisors (227463).

621273 is a wasteful number, since it uses less digits than its factorization.

621273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095.

The product of its digits is 504, while the sum is 21.

The square root of 621273 is about 788.2087287007. The cubic root of 621273 is about 85.3285095879.

Adding to 621273 its reverse (372126), we get a palindrome (993399).

The spelling of 621273 in words is "six hundred twenty-one thousand, two hundred seventy-three".