647246 has 4 divisors (see below), whose sum is σ = 970872. Its totient is φ = 323622.

The previous prime is 647219. The next prime is 647261. The reversal of 647246 is 642746.

It is a semiprime because it is the product of two primes.

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 647246.

It is an unprimeable number.

647246 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 as a sum of consecutive naturals, namely, 161810 + ... + 161813.

It is an arithmetic number, because the mean of its divisors is an integer number (242718).

2⁶⁴⁷²⁴⁶ is an apocalyptic number.

647246 is a deficient number, since it is larger than the sum of its proper divisors (323626).

647246 is a wasteful number, since it uses less digits than its factorization.

647246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323625.

The product of its digits is 8064, while the sum is 29.

The square root of 647246 is about 804.5160035698. The cubic root of 647246 is about 86.5013977299.

The spelling of 647246 in words is "six hundred forty-seven thousand, two hundred forty-six".