720622080 has 120 divisors (see below), whose sum is σ = 2495796732. Its totient is φ = 192159744.

The previous prime is 720622069. The next prime is 720622081. The reversal of 720622080 is 80226027.

It can be written as a sum of positive squares in 2 ways, for example, as 719956224 + 665856 = 26832^2 + 816^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (720622081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7402 + ... + 38678.

Almost surely, 2^720622080 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 720622080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247898366).

720622080 is an abundant number, since it is smaller than the sum of its proper divisors (1775174652).

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

720622080 is a wasteful number, since it uses less digits than its factorization.

720622080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31306 (or 31287 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 720622080 is about 26844.4050036502. The cubic root of 720622080 is about 896.5390039194.

The spelling of 720622080 in words is "seven hundred twenty million, six hundred twenty-two thousand, eighty".