720701736 has 64 divisors (see below), whose sum is σ = 1871251200. Its totient is φ = 231033600.

The previous prime is 720701687. The next prime is 720701747. The reversal of 720701736 is 637107027.

It is a junction number, because it is equal to n+sod(n) for n = 720701697 and 720701706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186706 + ... + 190526.

It is an arithmetic number, because the mean of its divisors is an integer number (29238300).

Almost surely, 2^720701736 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 720701736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935625600).

720701736 is an abundant number, since it is smaller than the sum of its proper divisors (1150549464).

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

720701736 is a wasteful number, since it uses less digits than its factorization.

720701736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 720701736 is about 26845.8886237725. Note that the first 3 decimals coincide. The cubic root of 720701736 is about 896.5720365272.

The spelling of 720701736 in words is "seven hundred twenty million, seven hundred one thousand, seven hundred thirty-six".