621110648 has 16 divisors (see below), whose sum is σ = 1167710280. Its totient is φ = 309721248.

The previous prime is 621110647. The next prime is 621110669. The reversal of 621110648 is 846011126.

It is a self number, because there is not a number n which added to its sum of digits gives 621110648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621110647) 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 3 ways as a sum of consecutive naturals, for example, 101090 + ... + 107057.

Almost surely, 2^621110648 is an apocalyptic number.

It is an amenable number.

621110648 is a deficient number, since it is larger than the sum of its proper divisors (546599632).

621110648 is a wasteful number, since it uses less digits than its factorization.

621110648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208526 (or 208522 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 621110648 is about 24922.0915655167. The cubic root of 621110648 is about 853.2107621530.

The spelling of 621110648 in words is "six hundred twenty-one million, one hundred ten thousand, six hundred forty-eight".