764980947 has 6 divisors (see below), whose sum is σ = 1104972492. Its totient is φ = 509987292.

The previous prime is 764980939. The next prime is 764980967. The reversal of 764980947 is 749089467.

It is a happy number.

It is not a de Polignac number, because 764980947 - 2³ = 764980939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 764980893 and 764980902.

It is not an unprimeable number, because it can be changed into a prime (764980927) 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 5 ways as a sum of consecutive naturals, for example, 42498933 + ... + 42498950.

It is an arithmetic number, because the mean of its divisors is an integer number (184162082).

Almost surely, 2^764980947 is an apocalyptic number.

764980947 is a deficient number, since it is larger than the sum of its proper divisors (339991545).

764980947 is a wasteful number, since it uses less digits than its factorization.

764980947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84997889 (or 84997886 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 764980947 is about 27658.2889383996. The cubic root of 764980947 is about 914.5698345281.

The spelling of 764980947 in words is "seven hundred sixty-four million, nine hundred eighty thousand, nine hundred forty-seven".