720680699 has 2 divisors, whose sum is σ = 720680700. Its totient is φ = 720680698.

The previous prime is 720680687. The next prime is 720680713. The reversal of 720680699 is 996086027.

It is a weak prime.

It is an emirp because it is prime and its reverse (996086027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720680699 - 2¹⁶ = 720615163 is a prime.

It is a super-2 number, since 2×720680699² = 1038761339822257202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720680629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360340349 + 360340350.

It is an arithmetic number, because the mean of its divisors is an integer number (360340350).

Almost surely, 2^720680699 is an apocalyptic number.

720680699 is a deficient number, since it is larger than the sum of its proper divisors (1).

720680699 is an equidigital number, since it uses as much as digits as its factorization.

720680699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 720680699 is about 26845.4968104522. The cubic root of 720680699 is about 896.5633129141.

The spelling of 720680699 in words is "seven hundred twenty million, six hundred eighty thousand, six hundred ninety-nine".