720538279 has 2 divisors, whose sum is σ = 720538280. Its totient is φ = 720538278.

The previous prime is 720538261. The next prime is 720538297. The reversal of 720538279 is 972835027.

Together with next prime (720538297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (720538261) and next prime (720538297).

It is an emirp because it is prime and its reverse (972835027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720538279 - 2²³ = 712149671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720538219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360269139 + 360269140.

It is an arithmetic number, because the mean of its divisors is an integer number (360269140).

Almost surely, 2^720538279 is an apocalyptic number.

720538279 is a deficient number, since it is larger than the sum of its proper divisors (1).

720538279 is an equidigital number, since it uses as much as digits as its factorization.

720538279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 720538279 is about 26842.8440929794. The cubic root of 720538279 is about 896.5042497907.

It can be divided in two parts, 720538 and 279, that multiplied together give a palindrome (201030102).

The spelling of 720538279 in words is "seven hundred twenty million, five hundred thirty-eight thousand, two hundred seventy-nine".