647383 has 8 divisors (see below), whose sum is σ = 712080. Its totient is φ = 583680.

The previous prime is 647371. The next prime is 647399. The reversal of 647383 is 383746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647303) 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 7 ways as a sum of consecutive naturals, for example, 2391 + ... + 2647.

It is an arithmetic number, because the mean of its divisors is an integer number (89010).

2⁶⁴⁷³⁸³ is an apocalyptic number.

647383 is a deficient number, since it is larger than the sum of its proper divisors (64697).

647383 is a wasteful number, since it uses less digits than its factorization.

647383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its digits is 12096, while the sum is 31.

The square root of 647383 is about 804.6011434245. The cubic root of 647383 is about 86.5075004355.

It can be divided in two parts, 6473 and 83, that added together give a palindrome (6556).

The spelling of 647383 in words is "six hundred forty-seven thousand, three hundred eighty-three".