720701732 has 12 divisors (see below), whose sum is σ = 1261451100. Its totient is φ = 360287136.

The previous prime is 720701687. The next prime is 720701747. The reversal of 720701732 is 237107027.

It can be written as a sum of positive squares in 2 ways, for example, as 321341476 + 399360256 = 17926^2 + 19984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 720701695 and 720701704.

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 3 ways as a sum of consecutive naturals, for example, 17138 + ... + 41654.

It is an arithmetic number, because the mean of its divisors is an integer number (105120925).

Almost surely, 2^720701732 is an apocalyptic number.

It is an amenable number.

720701732 is a deficient number, since it is larger than the sum of its proper divisors (540749368).

720701732 is a wasteful number, since it uses less digits than its factorization.

720701732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31870 (or 31868 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 720701732 is about 26845.8885492732. Note that the first 3 decimals coincide. The cubic root of 720701732 is about 896.5720348685.

Adding to 720701732 its reverse (237107027), we get a palindrome (957808759).

The spelling of 720701732 in words is "seven hundred twenty million, seven hundred one thousand, seven hundred thirty-two".