647360447 has 8 divisors (see below), whose sum is σ = 649950000. Its totient is φ = 644776704.

The previous prime is 647360431. The next prime is 647360471. The reversal of 647360447 is 744063746.

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 647360447 - 2⁴ = 647360431 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 (647360477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517679 + ... + 518927.

It is an arithmetic number, because the mean of its divisors is an integer number (81243750).

Almost surely, 2^647360447 is an apocalyptic number.

647360447 is a deficient number, since it is larger than the sum of its proper divisors (2589553).

647360447 is a wasteful number, since it uses less digits than its factorization.

647360447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 647360447 is about 25443.2790143095. The cubic root of 647360447 is about 865.0649586465.

The spelling of 647360447 in words is "six hundred forty-seven million, three hundred sixty thousand, four hundred forty-seven".