622491780 has 96 divisors (see below), whose sum is σ = 1877557248. Its totient is φ = 153648000.

The previous prime is 622491769. The next prime is 622491787. The reversal of 622491780 is 87194226.

It is not an unprimeable number, because it can be changed into a prime (622491787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35505 + ... + 50055.

It is an arithmetic number, because the mean of its divisors is an integer number (19557888).

Almost surely, 2^622491780 is an apocalyptic number.

622491780 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 622491780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938778624).

622491780 is an abundant number, since it is smaller than the sum of its proper divisors (1255065468).

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

622491780 is a wasteful number, since it uses less digits than its factorization.

622491780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617 (or 14615 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 622491780 is about 24949.7851694158. The cubic root of 622491780 is about 853.8427076959.

The spelling of 622491780 in words is "six hundred twenty-two million, four hundred ninety-one thousand, seven hundred eighty".