647048 has 16 divisors (see below), whose sum is σ = 1255500. Its totient is φ = 312256.

The previous prime is 647047. The next prime is 647057. The reversal of 647048 is 840746.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 3844 = 802^2 + 62^2 .

It is a super-2 number, since 2×647048² = 837342228608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 647048.

It is not an unprimeable number, because it can be changed into a prime (647047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163 + ... + 1626.

2⁶⁴⁷⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

647048 is a deficient number, since it is larger than the sum of its proper divisors (608452).

647048 is a wasteful number, since it uses less digits than its factorization.

647048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 647048 is about 804.3929388054. The cubic root of 647048 is about 86.4925762393.

The spelling of 647048 in words is "six hundred forty-seven thousand, forty-eight".