764312117 has 4 divisors (see below), whose sum is σ = 774782220. Its totient is φ = 753842016.

The previous prime is 764312111. The next prime is 764312141. The reversal of 764312117 is 711213467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711213467 = 6089 ⋅116803.

It can be written as a sum of positive squares in 2 ways, for example, as 373301041 + 391011076 = 19321^2 + 19774^2 .

It is a cyclic number.

It is not a de Polignac number, because 764312117 - 2⁸ = 764311861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764312111) 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, 5234942 + ... + 5235087.

It is an arithmetic number, because the mean of its divisors is an integer number (193695555).

Almost surely, 2^764312117 is an apocalyptic number.

It is an amenable number.

764312117 is a deficient number, since it is larger than the sum of its proper divisors (10470103).

764312117 is a wasteful number, since it uses less digits than its factorization.

764312117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470102.

The product of its digits is 7056, while the sum is 32.

The square root of 764312117 is about 27646.1953440252. The cubic root of 764312117 is about 914.3032178232.

The spelling of 764312117 in words is "seven hundred sixty-four million, three hundred twelve thousand, one hundred seventeen".