621206852 has 24 divisors (see below), whose sum is σ = 1265858496. Its totient is φ = 261207648.

The previous prime is 621206851. The next prime is 621206869. The reversal of 621206852 is 258602126.

It is not an unprimeable number, because it can be changed into a prime (621206851) 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, 207818 + ... + 210785.

It is an arithmetic number, because the mean of its divisors is an integer number (52744104).

Almost surely, 2^621206852 is an apocalyptic number.

It is an amenable number.

621206852 is an abundant number, since it is smaller than the sum of its proper divisors (644651644).

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

621206852 is a wasteful number, since it uses less digits than its factorization.

621206852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418667 (or 418665 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 621206852 is about 24924.0215856109. The cubic root of 621206852 is about 853.2548112291.

Adding to 621206852 its reverse (258602126), we get a palindrome (879808978).

The spelling of 621206852 in words is "six hundred twenty-one million, two hundred six thousand, eight hundred fifty-two".