766064305 has 4 divisors (see below), whose sum is σ = 919277172. Its totient is φ = 612851440.

The previous prime is 766064293. The next prime is 766064339. The reversal of 766064305 is 503460667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503460667 = 1511 ⋅333197.

It can be written as a sum of positive squares in 2 ways, for example, as 372914721 + 393149584 = 19311^2 + 19828^2 .

It is not a de Polignac number, because 766064305 - 2¹¹ = 766062257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76606426 + ... + 76606435.

It is an arithmetic number, because the mean of its divisors is an integer number (229819293).

Almost surely, 2^766064305 is an apocalyptic number.

It is an amenable number.

766064305 is a deficient number, since it is larger than the sum of its proper divisors (153212867).

766064305 is a wasteful number, since it uses less digits than its factorization.

766064305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153212866.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 766064305 is about 27677.8666988625. The cubic root of 766064305 is about 915.0013656205.

The spelling of 766064305 in words is "seven hundred sixty-six million, sixty-four thousand, three hundred five".