766794497666 has 8 divisors (see below), whose sum is σ = 1151443318080. Its totient is φ = 382980058308.

The previous prime is 766794497663. The next prime is 766794497699. The reversal of 766794497666 is 666794497667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (766794497663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208592966 + ... + 208596641.

It is an arithmetic number, because the mean of its divisors is an integer number (143930414760).

Almost surely, 2^766794497666 is an apocalyptic number.

766794497666 is a deficient number, since it is larger than the sum of its proper divisors (384648820414).

766794497666 is a wasteful number, since it uses less digits than its factorization.

766794497666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417190528.

The product of its digits is 3456649728, while the sum is 77.

Subtracting from 766794497666 its reverse (666794497667), we obtain a palindrome (99999999999).

The spelling of 766794497666 in words is "seven hundred sixty-six billion, seven hundred ninety-four million, four hundred ninety-seven thousand, six hundred sixty-six".