621369212 has 12 divisors (see below), whose sum is σ = 1088167080. Its totient is φ = 310464336.

The previous prime is 621369181. The next prime is 621369251. The reversal of 621369212 is 212963126.

It is a happy number.

621369212 is nontrivially palindromic in base 5.

621369212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48638 + ... + 60069.

It is an arithmetic number, because the mean of its divisors is an integer number (90680590).

Almost surely, 2^621369212 is an apocalyptic number.

It is an amenable number.

621369212 is a deficient number, since it is larger than the sum of its proper divisors (466797868).

621369212 is a wasteful number, since it uses less digits than its factorization.

621369212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110140 (or 110138 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 621369212 is about 24927.2784715861. The cubic root of 621369212 is about 853.3291409435.

The spelling of 621369212 in words is "six hundred twenty-one million, three hundred sixty-nine thousand, two hundred twelve".