766440705883 has 4 divisors (see below), whose sum is σ = 766956134880. Its totient is φ = 765925276888.

The previous prime is 766440705809. The next prime is 766440705913. The reversal of 766440705883 is 388507044667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 766440705883 - 2¹⁷ = 766440574811 is a prime.

It is a Smith number, since the sum of its digits (58) 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 not an unprimeable number, because it can be changed into a prime (766440705683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257712268 + ... + 257715241.

It is an arithmetic number, because the mean of its divisors is an integer number (191739033720).

Almost surely, 2^766440705883 is an apocalyptic number.

766440705883 is a deficient number, since it is larger than the sum of its proper divisors (515428997).

766440705883 is a wasteful number, since it uses less digits than its factorization.

766440705883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515428996.

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 766440705883 in words is "seven hundred sixty-six billion, four hundred forty million, seven hundred five thousand, eight hundred eighty-three".