621483408 has 160 divisors (see below), whose sum is σ = 2195692800. Its totient is φ = 163897344.

The previous prime is 621483367. The next prime is 621483431. The reversal of 621483408 is 804384126.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31408 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (13723080).

Almost surely, 2^621483408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621483408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097846400).

621483408 is an abundant number, since it is smaller than the sum of its proper divisors (1574209392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621483408 is a wasteful number, since it uses less digits than its factorization.

621483408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846 (or 15834 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 621483408 is about 24929.5689493421. The cubic root of 621483408 is about 853.3814130353.

It can be divided in two parts, 62148 and 3408, that added together give a palindrome (65556).

The spelling of 621483408 in words is "six hundred twenty-one million, four hundred eighty-three thousand, four hundred eight".