766113665 has 8 divisors (see below), whose sum is σ = 919703400. Its totient is φ = 612646272.

The previous prime is 766113661. The next prime is 766113697. The reversal of 766113665 is 566311667.

It can be written as a sum of positive squares in 4 ways, for example, as 230098561 + 536015104 = 15169^2 + 23152^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 766113665 - 2² = 766113661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (766113661) 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 7 ways as a sum of consecutive naturals, for example, 16190 + ... + 42359.

It is an arithmetic number, because the mean of its divisors is an integer number (114962925).

Almost surely, 2^766113665 is an apocalyptic number.

It is an amenable number.

766113665 is a deficient number, since it is larger than the sum of its proper divisors (153589735).

766113665 is a wasteful number, since it uses less digits than its factorization.

766113665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61171.

The product of its digits is 136080, while the sum is 41.

The square root of 766113665 is about 27678.7583717189. The cubic root of 766113665 is about 915.0210173639.

The spelling of 766113665 in words is "seven hundred sixty-six million, one hundred thirteen thousand, six hundred sixty-five".