647382 has 8 divisors (see below), whose sum is σ = 1294776. Its totient is φ = 215792.

The previous prime is 647371. The next prime is 647399. The reversal of 647382 is 283746.

647382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

647382 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647382.

It is an unprimeable number.

647382 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, 53943 + ... + 53954.

It is an arithmetic number, because the mean of its divisors is an integer number (161847).

2⁶⁴⁷³⁸² is an apocalyptic number.

647382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

647382 is a wasteful number, since it uses less digits than its factorization.

647382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107902.

The product of its digits is 8064, while the sum is 30.

The square root of 647382 is about 804.6005219983. The cubic root of 647382 is about 86.5074558933.

It can be divided in two parts, 6473 and 82, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 647382 in words is "six hundred forty-seven thousand, three hundred eighty-two".