647452 has 12 divisors (see below), whose sum is σ = 1220296. Its totient is φ = 298800.

The previous prime is 647441. The next prime is 647453. The reversal of 647452 is 254746.

It is a self number, because there is not a number n which added to its sum of digits gives 647452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647453) by changing a digit.

647452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6174 + ... + 6277.

2⁶⁴⁷⁴⁵² is an apocalyptic number.

It is an amenable number.

647452 is a deficient number, since it is larger than the sum of its proper divisors (572844).

647452 is a wasteful number, since it uses less digits than its factorization.

647452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12468 (or 12466 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 647452 is about 804.6440206700. The cubic root of 647452 is about 86.5105737350.

The spelling of 647452 in words is "six hundred forty-seven thousand, four hundred fifty-two".