764275761 has 12 divisors (see below), whose sum is σ = 1105842192. Its totient is φ = 508645656.

The previous prime is 764275747. The next prime is 764275781. The reversal of 764275761 is 167572467.

764275761 is a `hidden beast` number, since 76 + 4 + 2 + 7 + 576 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-764275761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764275781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67051 + ... + 77616.

It is an arithmetic number, because the mean of its divisors is an integer number (92153516).

Almost surely, 2^764275761 is an apocalyptic number.

It is an amenable number.

764275761 is a deficient number, since it is larger than the sum of its proper divisors (341566431).

764275761 is a wasteful number, since it uses less digits than its factorization.

764275761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145260 (or 145257 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 764275761 is about 27645.5378135424. The cubic root of 764275761 is about 914.2887207200.

The spelling of 764275761 in words is "seven hundred sixty-four million, two hundred seventy-five thousand, seven hundred sixty-one".