622191616 has 44 divisors (see below), whose sum is σ = 1248055900. Its totient is φ = 310026240.

The previous prime is 622191571. The next prime is 622191671. The reversal of 622191616 is 616191226.

It can be written as a sum of positive squares in 2 ways, for example, as 159769600 + 462422016 = 12640^2 + 21504^2 .

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, 356506 + ... + 358246.

Almost surely, 2^622191616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622191616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624027950).

622191616 is an abundant number, since it is smaller than the sum of its proper divisors (625864284).

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

622191616 is a wasteful number, since it uses less digits than its factorization.

622191616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110 (or 2092 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 622191616 is about 24943.7690816765. The cubic root of 622191616 is about 853.7054453489.

The spelling of 622191616 in words is "six hundred twenty-two million, one hundred ninety-one thousand, six hundred sixteen".