621798616 has 32 divisors (see below), whose sum is σ = 1199161440. Its totient is φ = 302047488.

The previous prime is 621798607. The next prime is 621798623. The reversal of 621798616 is 616897126.

621798616 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 7 ways as a sum of consecutive naturals, for example, 289900 + ... + 292036.

It is an arithmetic number, because the mean of its divisors is an integer number (37473795).

Almost surely, 2^621798616 is an apocalyptic number.

It is an amenable number.

621798616 is a deficient number, since it is larger than the sum of its proper divisors (577362824).

621798616 is a wasteful number, since it uses less digits than its factorization.

621798616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163 (or 3159 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 621798616 is about 24935.8901184618. The cubic root of 621798616 is about 853.5256631640.

The spelling of 621798616 in words is "six hundred twenty-one million, seven hundred ninety-eight thousand, six hundred sixteen".