647306 has 8 divisors (see below), whose sum is σ = 1059264. Its totient is φ = 294220.

The previous prime is 647303. The next prime is 647321. The reversal of 647306 is 603746.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647306.

It is not an unprimeable number, because it can be changed into a prime (647303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14690 + ... + 14733.

It is an arithmetic number, because the mean of its divisors is an integer number (132408).

2⁶⁴⁷³⁰⁶ is an apocalyptic number.

647306 is a deficient number, since it is larger than the sum of its proper divisors (411958).

647306 is a wasteful number, since it uses less digits than its factorization.

647306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29436.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 647306 is about 804.5532922063. The cubic root of 647306 is about 86.5040705537.

The spelling of 647306 in words is "six hundred forty-seven thousand, three hundred six".