764705447 has 8 divisors (see below), whose sum is σ = 835712640. Its totient is φ = 693946360.

The previous prime is 764705443. The next prime is 764705467. The reversal of 764705447 is 744507467.

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 764705447 - 2² = 764705443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764705398 and 764705407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764705443) 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, 55547 + ... + 67932.

It is an arithmetic number, because the mean of its divisors is an integer number (104464080).

Almost surely, 2^764705447 is an apocalyptic number.

764705447 is a deficient number, since it is larger than the sum of its proper divisors (71007193).

764705447 is a wasteful number, since it uses less digits than its factorization.

764705447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124053.

The product of its (nonzero) digits is 658560, while the sum is 44.

The square root of 764705447 is about 27653.3080661247. The cubic root of 764705447 is about 914.4600303803.

The spelling of 764705447 in words is "seven hundred sixty-four million, seven hundred five thousand, four hundred forty-seven".