621201108 has 48 divisors (see below), whose sum is σ = 1584576000. Its totient is φ = 187845600.

The previous prime is 621201107. The next prime is 621201169. The reversal of 621201108 is 801102126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621201101) 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 15 ways as a sum of consecutive naturals, for example, 61153 + ... + 70583.

It is an arithmetic number, because the mean of its divisors is an integer number (33012000).

Almost surely, 2^621201108 is an apocalyptic number.

It is an amenable number.

621201108 is an abundant number, since it is smaller than the sum of its proper divisors (963374892).

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

621201108 is a wasteful number, since it uses less digits than its factorization.

621201108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948 (or 9946 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 621201108 is about 24923.9063551443. The cubic root of 621201108 is about 853.2521813425.

The spelling of 621201108 in words is "six hundred twenty-one million, two hundred one thousand, one hundred eight".