621269 has 4 divisors (see below), whose sum is σ = 677760. Its totient is φ = 564780.

The previous prime is 621259. The next prime is 621289. The reversal of 621269 is 962126.

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 621269 - 2⁸ = 621013 is a prime.

It is a super-2 number, since 2×621269² = 771950340722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621239) 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, 28229 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (169440).

2⁶²¹²⁶⁹ is an apocalyptic number.

It is an amenable number.

621269 is a deficient number, since it is larger than the sum of its proper divisors (56491).

621269 is a wasteful number, since it uses less digits than its factorization.

621269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56490.

The product of its digits is 1296, while the sum is 26.

The square root of 621269 is about 788.2061912977. The cubic root of 621269 is about 85.3283264613.

It can be divided in two parts, 62 and 1269, that added together give a palindrome (1331).

The spelling of 621269 in words is "six hundred twenty-one thousand, two hundred sixty-nine".