647057044 has 24 divisors (see below), whose sum is σ = 1150890048. Its totient is φ = 318264960.

The previous prime is 647057029. The next prime is 647057051. The reversal of 647057044 is 440750746.

It is a junction number, because it is equal to n+sod(n) for n = 647056994 and 647057012.

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, 75969 + ... + 84055.

It is an arithmetic number, because the mean of its divisors is an integer number (47953752).

Almost surely, 2^647057044 is an apocalyptic number.

It is an amenable number.

647057044 is a deficient number, since it is larger than the sum of its proper divisors (503833004).

647057044 is a wasteful number, since it uses less digits than its factorization.

647057044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8415 (or 8413 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 647057044 is about 25437.3159747643. The cubic root of 647057044 is about 864.9297921566.

The spelling of 647057044 in words is "six hundred forty-seven million, fifty-seven thousand, forty-four".