622566780 has 144 divisors (see below), whose sum is σ = 1982806560. Its totient is φ = 145671680.

The previous prime is 622566757. The next prime is 622566781. The reversal of 622566780 is 87665226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622566781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209062 + ... + 212018.

It is an arithmetic number, because the mean of its divisors is an integer number (13769490).

Almost surely, 2^622566780 is an apocalyptic number.

622566780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622566780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991403280).

622566780 is an abundant number, since it is smaller than the sum of its proper divisors (1360239780).

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

622566780 is a wasteful number, since it uses less digits than its factorization.

622566780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 622566780 is about 24951.2881430999. The cubic root of 622566780 is about 853.8769976434.

The spelling of 622566780 in words is "six hundred twenty-two million, five hundred sixty-six thousand, seven hundred eighty".