621244768 has 24 divisors (see below), whose sum is σ = 1228885560. Its totient is φ = 309146880.

The previous prime is 621244759. The next prime is 621244777. The reversal of 621244768 is 867442126.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (621244759) and next prime (621244777).

It is a self number, because there is not a number n which added to its sum of digits gives 621244768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39253 + ... + 52756.

It is an arithmetic number, because the mean of its divisors is an integer number (51203565).

Almost surely, 2^621244768 is an apocalyptic number.

It is an amenable number.

621244768 is a deficient number, since it is larger than the sum of its proper divisors (607640792).

621244768 is a wasteful number, since it uses less digits than its factorization.

621244768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92230 (or 92222 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 621244768 is about 24924.7822056683. The cubic root of 621244768 is about 853.2721706380.

The spelling of 621244768 in words is "six hundred twenty-one million, two hundred forty-four thousand, seven hundred sixty-eight".