720970843 has 2 divisors, whose sum is σ = 720970844. Its totient is φ = 720970842.

The previous prime is 720970829. The next prime is 720970879. The reversal of 720970843 is 348079027.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720970843 is a prime.

It is a super-2 number, since 2×720970843² = 1039597912912261298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720970796 and 720970805.

It is not a weakly prime, because it can be changed into another prime (720970543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360485421 + 360485422.

It is an arithmetic number, because the mean of its divisors is an integer number (360485422).

Almost surely, 2^720970843 is an apocalyptic number.

720970843 is a deficient number, since it is larger than the sum of its proper divisors (1).

720970843 is an equidigital number, since it uses as much as digits as its factorization.

720970843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 720970843 is about 26850.9002269943. The cubic root of 720970843 is about 896.6836147178.

The spelling of 720970843 in words is "seven hundred twenty million, nine hundred seventy thousand, eight hundred forty-three".