720516149 has 2 divisors, whose sum is σ = 720516150. Its totient is φ = 720516148.

The previous prime is 720516073. The next prime is 720516163. The reversal of 720516149 is 941615027.

720516149 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., 719205124 + 1311025 = 26818^2 + 1145^2 .

It is an emirp because it is prime and its reverse (941615027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720516149 - 2²⁴ = 703738933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720516169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360258074 + 360258075.

It is an arithmetic number, because the mean of its divisors is an integer number (360258075).

Almost surely, 2^720516149 is an apocalyptic number.

It is an amenable number.

720516149 is a deficient number, since it is larger than the sum of its proper divisors (1).

720516149 is an equidigital number, since it uses as much as digits as its factorization.

720516149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 720516149 is about 26842.4318756703. The cubic root of 720516149 is about 896.4950715403.

The spelling of 720516149 in words is "seven hundred twenty million, five hundred sixteen thousand, one hundred forty-nine".