621223308 has 72 divisors (see below), whose sum is σ = 1625573040. Its totient is φ = 199895040.

The previous prime is 621223283. The next prime is 621223381. The reversal of 621223308 is 803322126.

621223308 is a `hidden beast` number, since 621 + 2 + 2 + 3 + 30 + 8 = 666.

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 23 ways as a sum of consecutive naturals, for example, 141003 + ... + 145341.

Almost surely, 2^621223308 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 621223308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812786520).

621223308 is an abundant number, since it is smaller than the sum of its proper divisors (1004349732).

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

621223308 is a wasteful number, since it uses less digits than its factorization.

621223308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 621223308 is about 24924.3517067145. The cubic root of 621223308 is about 853.2623455081.

The spelling of 621223308 in words is "six hundred twenty-one million, two hundred twenty-three thousand, three hundred eight".