647683 has 8 divisors (see below), whose sum is σ = 708480. Its totient is φ = 589440.

The previous prime is 647663. The next prime is 647687. The reversal of 647683 is 386746.

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

It is a cyclic number.

It is not a de Polignac number, because 647683 - 2⁵ = 647651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (88560).

2⁶⁴⁷⁶⁸³ is an apocalyptic number.

647683 is a deficient number, since it is larger than the sum of its proper divisors (60797).

647683 is a wasteful number, since it uses less digits than its factorization.

647683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its digits is 24192, while the sum is 34.

The square root of 647683 is about 804.7875496055. The cubic root of 647683 is about 86.5208610182.

The spelling of 647683 in words is "six hundred forty-seven thousand, six hundred eighty-three".