720731934720 has 1248 divisors, whose sum is σ = 3137612744448. Its totient is φ = 154920812544.

The previous prime is 720731934691. The next prime is 720731934731. The reversal of 720731934720 is 27439137027.

720731934720 is a `hidden beast` number, since 7 + 20 + 73 + 1 + 93 + 472 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 592219552 + ... + 592220768.

It is an arithmetic number, because the mean of its divisors is an integer number (2514112776).

Almost surely, 2^720731934720 is an apocalyptic number.

720731934720 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 720731934720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568806372224).

720731934720 is an abundant number, since it is smaller than the sum of its proper divisors (2416880809728).

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

720731934720 is a wasteful number, since it uses less digits than its factorization.

720731934720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The spelling of 720731934720 in words is "seven hundred twenty billion, seven hundred thirty-one million, nine hundred thirty-four thousand, seven hundred twenty".