722623680 has 168 divisors, whose sum is σ = 2577858192. Its totient is φ = 192678912.

The previous prime is 722623679. The next prime is 722623687. The reversal of 722623680 is 86326227.

722623680 is a `hidden beast` number, since 7 + 22 + 623 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (722623687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73114 + ... + 82406.

It is an arithmetic number, because the mean of its divisors is an integer number (15344394).

Almost surely, 2^722623680 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 722623680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288929096).

722623680 is an abundant number, since it is smaller than the sum of its proper divisors (1855234512).

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

722623680 is an equidigital number, since it uses as much as digits as its factorization.

722623680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325 (or 9303 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 722623680 is about 26881.6606629873. The cubic root of 722623680 is about 897.3683121887.

The spelling of 722623680 in words is "seven hundred twenty-two million, six hundred twenty-three thousand, six hundred eighty".