720882892817 has 2 divisors, whose sum is σ = 720882892818. Its totient is φ = 720882892816.

The previous prime is 720882892759. The next prime is 720882892837. The reversal of 720882892817 is 718298288027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566468474881 + 154414417936 = 752641^2 + 392956^2 .

It is a cyclic number.

It is not a de Polignac number, because 720882892817 - 2¹⁰ = 720882891793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720882892817.

It is not a weakly prime, because it can be changed into another prime (720882892837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360441446408 + 360441446409.

It is an arithmetic number, because the mean of its divisors is an integer number (360441446409).

Almost surely, 2^720882892817 is an apocalyptic number.

It is an amenable number.

720882892817 is a deficient number, since it is larger than the sum of its proper divisors (1).

720882892817 is an equidigital number, since it uses as much as digits as its factorization.

720882892817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14450688, while the sum is 62.

The spelling of 720882892817 in words is "seven hundred twenty billion, eight hundred eighty-two million, eight hundred ninety-two thousand, eight hundred seventeen".