720500539 has 16 divisors (see below), whose sum is σ = 832193280. Its totient is φ = 616908960.

The previous prime is 720500537. The next prime is 720500551. The reversal of 720500539 is 935005027.

720500539 = T₃₈₂ + T₃₈₃ + ... + T₁₆₃₅.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 720500539 - 2¹ = 720500537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720500539.

It is not an unprimeable number, because it can be changed into a prime (720500531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26194 + ... + 46120.

It is an arithmetic number, because the mean of its divisors is an integer number (52012080).

Almost surely, 2^720500539 is an apocalyptic number.

720500539 is a deficient number, since it is larger than the sum of its proper divisors (111692741).

720500539 is a wasteful number, since it uses less digits than its factorization.

720500539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20130.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 720500539 is about 26842.1411031236. The cubic root of 720500539 is about 896.4885972976.

The spelling of 720500539 in words is "seven hundred twenty million, five hundred thousand, five hundred thirty-nine".