647279572 has 12 divisors (see below), whose sum is σ = 1133002080. Its totient is φ = 323564696.

The previous prime is 647279543. The next prime is 647279579. The reversal of 647279572 is 275972746.

It is a happy number.

647279572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647279579) 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, 3579 + ... + 36157.

It is an arithmetic number, because the mean of its divisors is an integer number (94416840).

Almost surely, 2^647279572 is an apocalyptic number.

It is an amenable number.

647279572 is a deficient number, since it is larger than the sum of its proper divisors (485722508).

647279572 is a wasteful number, since it uses less digits than its factorization.

647279572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37550 (or 37548 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 49.

The square root of 647279572 is about 25441.6896451474. The cubic root of 647279572 is about 865.0289328422.

The spelling of 647279572 in words is "six hundred forty-seven million, two hundred seventy-nine thousand, five hundred seventy-two".