720099744 has 192 divisors, whose sum is σ = 2402426880. Its totient is φ = 183720960.

The previous prime is 720099739. The next prime is 720099749. The reversal of 720099744 is 447990027.

It is an interprime number because it is at equal distance from previous prime (720099739) and next prime (720099749).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 720099696 and 720099705.

It is not an unprimeable number, because it can be changed into a prime (720099749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269487 + ... + 272145.

It is an arithmetic number, because the mean of its divisors is an integer number (12512640).

Almost surely, 2^720099744 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 720099744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201213440).

720099744 is an abundant number, since it is smaller than the sum of its proper divisors (1682327136).

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

720099744 is a wasteful number, since it uses less digits than its factorization.

720099744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2715 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 720099744 is about 26834.6742853346. The cubic root of 720099744 is about 896.3223356629.

The spelling of 720099744 in words is "seven hundred twenty million, ninety-nine thousand, seven hundred forty-four".