622320720 has 160 divisors (see below), whose sum is σ = 2231857152. Its totient is φ = 140499456.

The previous prime is 622320709. The next prime is 622320733. The reversal of 622320720 is 27023226.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137209 + ... + 141671.

Almost surely, 2^622320720 is an apocalyptic number.

622320720 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 622320720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115928576).

622320720 is an abundant number, since it is smaller than the sum of its proper divisors (1609536432).

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

622320720 is a wasteful number, since it uses less digits than its factorization.

622320720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 622320720 is about 24946.3568482454. The cubic root of 622320720 is about 853.7644888775.

Adding to 622320720 its reverse (27023226), we get a palindrome (649343946).

The spelling of 622320720 in words is "six hundred twenty-two million, three hundred twenty thousand, seven hundred twenty".