621824133 has 16 divisors (see below), whose sum is σ = 978108416. Its totient is φ = 343865520.

The previous prime is 621824123. The next prime is 621824149. The reversal of 621824133 is 331428126.

It is not a de Polignac number, because 621824133 - 2⁴ = 621824117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 621824133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621824123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476941 + ... + 478242.

It is an arithmetic number, because the mean of its divisors is an integer number (61131776).

Almost surely, 2^621824133 is an apocalyptic number.

It is an amenable number.

621824133 is a deficient number, since it is larger than the sum of its proper divisors (356284283).

621824133 is a wasteful number, since it uses less digits than its factorization.

621824133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955224.

The product of its digits is 6912, while the sum is 30.

The square root of 621824133 is about 24936.4017652908. The cubic root of 621824133 is about 853.5373384964.

The spelling of 621824133 in words is "six hundred twenty-one million, eight hundred twenty-four thousand, one hundred thirty-three".