720870741 has 24 divisors (see below), whose sum is σ = 1071752760. Its totient is φ = 466563456.

The previous prime is 720870721. The next prime is 720870763. The reversal of 720870741 is 147078027.

It can be written as a sum of positive squares in 4 ways, for example, as 203490225 + 517380516 = 14265^2 + 22746^2 .

It is not a de Polignac number, because 720870741 - 2¹⁵ = 720837973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720870696 and 720870705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720870701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167371 + ... + 171623.

It is an arithmetic number, because the mean of its divisors is an integer number (44656365).

Almost surely, 2^720870741 is an apocalyptic number.

It is an amenable number.

720870741 is a deficient number, since it is larger than the sum of its proper divisors (350882019).

720870741 is a wasteful number, since it uses less digits than its factorization.

720870741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805 (or 4802 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 720870741 is about 26849.0361279507. The cubic root of 720870741 is about 896.6421132810.

The spelling of 720870741 in words is "seven hundred twenty million, eight hundred seventy thousand, seven hundred forty-one".