621546216 has 32 divisors (see below), whose sum is σ = 1554604800. Its totient is φ = 207083520.

The previous prime is 621546169. The next prime is 621546293. The reversal of 621546216 is 612645126.

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 7 ways as a sum of consecutive naturals, for example, 59721 + ... + 69351.

It is an arithmetic number, because the mean of its divisors is an integer number (48581400).

Almost surely, 2^621546216 is an apocalyptic number.

It is an amenable number.

621546216 is an abundant number, since it is smaller than the sum of its proper divisors (933058584).

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

621546216 is a wasteful number, since it uses less digits than its factorization.

621546216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329 (or 12325 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 621546216 is about 24930.8286264215. The cubic root of 621546216 is about 853.4101600480.

The spelling of 621546216 in words is "six hundred twenty-one million, five hundred forty-six thousand, two hundred sixteen".