720602761 has 2 divisors, whose sum is σ = 720602762. Its totient is φ = 720602760.

The previous prime is 720602737. The next prime is 720602767. The reversal of 720602761 is 167206027.

720602761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582305161 + 138297600 = 24131^2 + 11760^2 .

It is a cyclic number.

It is not a de Polignac number, because 720602761 - 2⁹ = 720602249 is a prime.

It is not a weakly prime, because it can be changed into another prime (720602767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360301380 + 360301381.

It is an arithmetic number, because the mean of its divisors is an integer number (360301381).

Almost surely, 2^720602761 is an apocalyptic number.

It is an amenable number.

720602761 is a deficient number, since it is larger than the sum of its proper divisors (1).

720602761 is an equidigital number, since it uses as much as digits as its factorization.

720602761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 720602761 is about 26844.0451683423. The cubic root of 720602761 is about 896.5309921416.

Adding to 720602761 its reverse (167206027), we get a palindrome (887808788).

The spelling of 720602761 in words is "seven hundred twenty million, six hundred two thousand, seven hundred sixty-one".