720765079 has 2 divisors, whose sum is σ = 720765080. Its totient is φ = 720765078.

The previous prime is 720765077. The next prime is 720765107. The reversal of 720765079 is 970567027.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (970567027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720765079 - 2¹ = 720765077 is a prime.

Together with 720765077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720765077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360382539 + 360382540.

It is an arithmetic number, because the mean of its divisors is an integer number (360382540).

Almost surely, 2^720765079 is an apocalyptic number.

720765079 is a deficient number, since it is larger than the sum of its proper divisors (1).

720765079 is an equidigital number, since it uses as much as digits as its factorization.

720765079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 720765079 is about 26847.0683501942. The cubic root of 720765079 is about 896.5983025473.

The spelling of 720765079 in words is "seven hundred twenty million, seven hundred sixty-five thousand, seventy-nine".