621275 has 6 divisors (see below), whose sum is σ = 770412. Its totient is φ = 497000.

The previous prime is 621259. The next prime is 621289. The reversal of 621275 is 572126.

It is not a de Polignac number, because 621275 - 2⁴ = 621259 is a prime.

It is a d-powerful number, because it can be written as 6 + 2¹¹ + 2¹⁹ + 1 + 7⁵ + 5⁷ .

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 621275.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12401 + ... + 12450.

It is an arithmetic number, because the mean of its divisors is an integer number (128402).

2⁶²¹²⁷⁵ is an apocalyptic number.

621275 is a deficient number, since it is larger than the sum of its proper divisors (149137).

621275 is a wasteful number, since it uses less digits than its factorization.

621275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24861 (or 24856 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 621275 is about 788.2099973992. The cubic root of 621275 is about 85.3286011509.

The spelling of 621275 in words is "six hundred twenty-one thousand, two hundred seventy-five".