647063 has 4 divisors (see below), whose sum is σ = 667968. Its totient is φ = 626160.

The previous prime is 647057. The next prime is 647069. The reversal of 647063 is 360746.

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

It is an interprime number because it is at equal distance from previous prime (647057) and next prime (647069).

It is a cyclic number.

It is not a de Polignac number, because 647063 - 2⁴ = 647047 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 (647069) 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, 10406 + ... + 10467.

It is an arithmetic number, because the mean of its divisors is an integer number (166992).

2⁶⁴⁷⁰⁶³ is an apocalyptic number.

647063 is a deficient number, since it is larger than the sum of its proper divisors (20905).

647063 is a wasteful number, since it uses less digits than its factorization.

647063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20904.

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

The square root of 647063 is about 804.4022625528. The cubic root of 647063 is about 86.4932445970.

The spelling of 647063 in words is "six hundred forty-seven thousand, sixty-three".