647338472 has 16 divisors (see below), whose sum is σ = 1324101600. Its totient is φ = 294244720.

The previous prime is 647338457. The next prime is 647338477. The reversal of 647338472 is 274833746.

647338472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (647338477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677972 + ... + 3678147.

It is an arithmetic number, because the mean of its divisors is an integer number (82756350).

Almost surely, 2^647338472 is an apocalyptic number.

It is an amenable number.

647338472 is an abundant number, since it is smaller than the sum of its proper divisors (676763128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647338472 is a wasteful number, since it uses less digits than its factorization.

647338472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7356136 (or 7356132 counting only the distinct ones).

The product of its digits is 677376, while the sum is 44.

The square root of 647338472 is about 25442.8471677208. The cubic root of 647338472 is about 865.0551701700.

The spelling of 647338472 in words is "six hundred forty-seven million, three hundred thirty-eight thousand, four hundred seventy-two".