764509047 has 8 divisors (see below), whose sum is σ = 1038578544. Its totient is φ = 500056128.

The previous prime is 764509037. The next prime is 764509063. The reversal of 764509047 is 740905467.

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

It is not a de Polignac number, because 764509047 - 2¹⁹ = 763984759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764509007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403958 + ... + 2404275.

It is an arithmetic number, because the mean of its divisors is an integer number (129822318).

Almost surely, 2^764509047 is an apocalyptic number.

764509047 is a deficient number, since it is larger than the sum of its proper divisors (274069497).

764509047 is a wasteful number, since it uses less digits than its factorization.

764509047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808289.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 764509047 is about 27649.7567258737. The cubic root of 764509047 is about 914.3817364749.

The spelling of 764509047 in words is "seven hundred sixty-four million, five hundred nine thousand, forty-seven".