647029852 has 24 divisors (see below), whose sum is σ = 1297005696. Its totient is φ = 276667248.

The previous prime is 647029837. The next prime is 647029909. The reversal of 647029852 is 258920746.

It is a junction number, because it is equal to n+sod(n) for n = 647029799 and 647029808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13678 + ... + 38485.

It is an arithmetic number, because the mean of its divisors is an integer number (54041904).

Almost surely, 2^647029852 is an apocalyptic number.

It is an amenable number.

647029852 is an abundant number, since it is smaller than the sum of its proper divisors (649975844).

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

647029852 is a wasteful number, since it uses less digits than its factorization.

647029852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52617 (or 52615 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 647029852 is about 25436.7814787956. The cubic root of 647029852 is about 864.9176760171.

The spelling of 647029852 in words is "six hundred forty-seven million, twenty-nine thousand, eight hundred fifty-two".