621469 has 8 divisors (see below), whose sum is σ = 665280. Its totient is φ = 578496.

The previous prime is 621461. The next prime is 621473. The reversal of 621469 is 964126.

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 621469 - 2³ = 621461 is a prime.

It is a super-3 number, since 3×621469³ = 720078203332514127, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

621469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2232 + ... + 2494.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁶²¹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

621469 is a deficient number, since it is larger than the sum of its proper divisors (43811).

621469 is a wasteful number, since it uses less digits than its factorization.

621469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its digits is 2592, while the sum is 28.

The square root of 621469 is about 788.3330514446. Note that the first 3 decimals coincide. The cubic root of 621469 is about 85.3374818269.

The spelling of 621469 in words is "six hundred twenty-one thousand, four hundred sixty-nine".