647304407 has 10 divisors (see below), whose sum is σ = 683403048. Its totient is φ = 613112292.

The previous prime is 647304379. The next prime is 647304419. The reversal of 647304407 is 704403746.

647304407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 647304407 - 2¹⁰ = 647303383 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 (647304607) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 127838 + ... + 132804.

Almost surely, 2^647304407 is an apocalyptic number.

647304407 is a deficient number, since it is larger than the sum of its proper divisors (36098641).

647304407 is an frugal number, since it uses more digits than its factorization.

647304407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 647304407 is about 25442.1777173260. The cubic root of 647304407 is about 865.0399959231.

The spelling of 647304407 in words is "six hundred forty-seven million, three hundred four thousand, four hundred seven".