720502319 has 2 divisors, whose sum is σ = 720502320. Its totient is φ = 720502318.

The previous prime is 720502309. The next prime is 720502397. The reversal of 720502319 is 913205027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720502319 - 2¹² = 720498223 is a prime.

It is a super-2 number, since 2×720502319² = 1038247183368755522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720502291 and 720502300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720502309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360251159 + 360251160.

It is an arithmetic number, because the mean of its divisors is an integer number (360251160).

Almost surely, 2^720502319 is an apocalyptic number.

720502319 is a deficient number, since it is larger than the sum of its proper divisors (1).

720502319 is an equidigital number, since it uses as much as digits as its factorization.

720502319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 720502319 is about 26842.1742599216. The cubic root of 720502319 is about 896.4893355568.

The spelling of 720502319 in words is "seven hundred twenty million, five hundred two thousand, three hundred nineteen".