720081600 has 336 divisors, whose sum is σ = 2796844800. Its totient is φ = 158699520.

The previous prime is 720081581. The next prime is 720081643. The reversal of 720081600 is 6180027.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 974031 + ... + 974769.

Almost surely, 2^720081600 is an apocalyptic number.

720081600 is a gapful number since it is divisible by the number (70) 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 720081600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398422400).

720081600 is an abundant number, since it is smaller than the sum of its proper divisors (2076763200).

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

720081600 is a wasteful number, since it uses less digits than its factorization.

720081600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 720081600 is about 26834.3362131430. The cubic root of 720081600 is about 896.3148075349.

The spelling of 720081600 in words is "seven hundred twenty million, eighty-one thousand, six hundred".