766772665 has 8 divisors (see below), whose sum is σ = 933087168. Its totient is φ = 604778160.

The previous prime is 766772639. The next prime is 766772729. The reversal of 766772665 is 566277667.

It is a happy number.

766772665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 766772665 - 2⁷ = 766772537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079607 + ... + 1080316.

It is an arithmetic number, because the mean of its divisors is an integer number (116635896).

Almost surely, 2^766772665 is an apocalyptic number.

It is an amenable number.

766772665 is a deficient number, since it is larger than the sum of its proper divisors (166314503).

766772665 is a wasteful number, since it uses less digits than its factorization.

766772665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159999.

The product of its digits is 4445280, while the sum is 52.

The square root of 766772665 is about 27690.6602485387. The cubic root of 766772665 is about 915.2833048301.

The spelling of 766772665 in words is "seven hundred sixty-six million, seven hundred seventy-two thousand, six hundred sixty-five".