720666348767 has 2 divisors, whose sum is σ = 720666348768. Its totient is φ = 720666348766.

The previous prime is 720666348679. The next prime is 720666348781. The reversal of 720666348767 is 767843666027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720666348767 - 2¹⁰ = 720666347743 is a prime.

It is a super-3 number, since 3×720666348767³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720666348167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360333174383 + 360333174384.

It is an arithmetic number, because the mean of its divisors is an integer number (360333174384).

Almost surely, 2^720666348767 is an apocalyptic number.

720666348767 is a deficient number, since it is larger than the sum of its proper divisors (1).

720666348767 is an equidigital number, since it uses as much as digits as its factorization.

720666348767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 62.

The spelling of 720666348767 in words is "seven hundred twenty billion, six hundred sixty-six million, three hundred forty-eight thousand, seven hundred sixty-seven".