621205852 has 6 divisors (see below), whose sum is σ = 1087110248. Its totient is φ = 310602924.

The previous prime is 621205847. The next prime is 621205859. The reversal of 621205852 is 258502126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621205859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77650728 + ... + 77650735.

Almost surely, 2^621205852 is an apocalyptic number.

It is an amenable number.

621205852 is a deficient number, since it is larger than the sum of its proper divisors (465904396).

621205852 is a wasteful number, since it uses less digits than its factorization.

621205852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155301467 (or 155301465 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 621205852 is about 24924.0015246348. The cubic root of 621205852 is about 853.2543533809.

Adding to 621205852 its reverse (258502126), we get a palindrome (879707978).

The spelling of 621205852 in words is "six hundred twenty-one million, two hundred five thousand, eight hundred fifty-two".