766720799 has 16 divisors (see below), whose sum is σ = 853923840. Its totient is φ = 683635680.

The previous prime is 766720783. The next prime is 766720837. The reversal of 766720799 is 997027667.

It is not a de Polignac number, because 766720799 - 2⁴ = 766720783 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766720799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766720499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264134 + ... + 267020.

It is an arithmetic number, because the mean of its divisors is an integer number (53370240).

Almost surely, 2^766720799 is an apocalyptic number.

766720799 is a deficient number, since it is larger than the sum of its proper divisors (87203041).

766720799 is a wasteful number, since it uses less digits than its factorization.

766720799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590.

The product of its (nonzero) digits is 2000376, while the sum is 53.

The square root of 766720799 is about 27689.7237075418. The cubic root of 766720799 is about 915.2626671815.

The spelling of 766720799 in words is "seven hundred sixty-six million, seven hundred twenty thousand, seven hundred ninety-nine".