720887223450 has 96 divisors (see below), whose sum is σ = 1843783704576. Its totient is φ = 186287290560.

The previous prime is 720887223449. The next prime is 720887223461. The reversal of 720887223450 is 54322788027.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 720887223450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379129 + ... + 1259171.

It is an arithmetic number, because the mean of its divisors is an integer number (19206080256).

Almost surely, 2^720887223450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720887223450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921891852288).

720887223450 is an abundant number, since it is smaller than the sum of its proper divisors (1122896481126).

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

720887223450 is a wasteful number, since it uses less digits than its factorization.

720887223450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880228 (or 880223 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 720887223450 in words is "seven hundred twenty billion, eight hundred eighty-seven million, two hundred twenty-three thousand, four hundred fifty".