647883 has 6 divisors (see below), whose sum is σ = 935844. Its totient is φ = 431916.

The previous prime is 647861. The next prime is 647891. The reversal of 647883 is 388746.

647883 is a `hidden beast` number, since 647 + 8 + 8 + 3 = 666.

It is not a de Polignac number, because 647883 - 2⁵ = 647851 is a prime.

647883 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (647893) 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 5 ways as a sum of consecutive naturals, for example, 35985 + ... + 36002.

It is an arithmetic number, because the mean of its divisors is an integer number (155974).

2⁶⁴⁷⁸⁸³ is an apocalyptic number.

647883 is a deficient number, since it is larger than the sum of its proper divisors (287961).

647883 is a wasteful number, since it uses less digits than its factorization.

647883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71993 (or 71990 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 647883 is about 804.9117964100. The cubic root of 647883 is about 86.5297657815.

It can be divided in two parts, 6478 and 83, that added together give a 8-th power (6561 = 3⁸).

The spelling of 647883 in words is "six hundred forty-seven thousand, eight hundred eighty-three".