720505027 has 6 divisors (see below), whose sum is σ = 791960204. Its totient is φ = 655004460.

The previous prime is 720505021. The next prime is 720505031.

720505027 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 720505027 - 2¹⁹ = 719980739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720504986 and 720505004.

It is not an unprimeable number, because it can be changed into a prime (720505021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2977173 + ... + 2977414.

Almost surely, 2^720505027 is an apocalyptic number.

720505027 is a deficient number, since it is larger than the sum of its proper divisors (71455177).

720505027 is a wasteful number, since it uses less digits than its factorization.

720505027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954609 (or 5954598 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 720505027 is about 26842.2247028818. The cubic root of 720505027 is about 896.4904587038.

It can be divided in two parts, 72050 and 5027, that added together give a palindrome (77077).

The spelling of 720505027 in words is "seven hundred twenty million, five hundred five thousand, twenty-seven".