621106216 has 32 divisors (see below), whose sum is σ = 1199376000. Its totient is φ = 301406976.

The previous prime is 621106177. The next prime is 621106243. The reversal of 621106216 is 612601126.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28960 + ... + 45616.

It is an arithmetic number, because the mean of its divisors is an integer number (37480500).

Almost surely, 2^621106216 is an apocalyptic number.

It is an amenable number.

621106216 is a deficient number, since it is larger than the sum of its proper divisors (578269784).

621106216 is a wasteful number, since it uses less digits than its factorization.

621106216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16801 (or 16797 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 621106216 is about 24922.0026482624. The cubic root of 621106216 is about 853.2087327566.

The spelling of 621106216 in words is "six hundred twenty-one million, one hundred six thousand, two hundred sixteen".