647633452 has 24 divisors (see below), whose sum is σ = 1181698560. Its totient is φ = 310181760.

The previous prime is 647633407. The next prime is 647633453. The reversal of 647633452 is 254336746.

It is not an unprimeable number, because it can be changed into a prime (647633453) by changing a digit.

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, 7249 + ... + 36712.

It is an arithmetic number, because the mean of its divisors is an integer number (49237440).

Almost surely, 2^647633452 is an apocalyptic number.

It is an amenable number.

647633452 is a deficient number, since it is larger than the sum of its proper divisors (534065108).

647633452 is a wasteful number, since it uses less digits than its factorization.

647633452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44121 (or 44119 counting only the distinct ones).

The product of its digits is 362880, while the sum is 40.

The square root of 647633452 is about 25448.6434216050. The cubic root of 647633452 is about 865.1865466887.

The spelling of 647633452 in words is "six hundred forty-seven million, six hundred thirty-three thousand, four hundred fifty-two".