647027 has 4 divisors (see below), whose sum is σ = 657696. Its totient is φ = 636360.

The previous prime is 647011. The next prime is 647033. The reversal of 647027 is 720746.

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

It is a cyclic number.

It is not a de Polignac number, because 647027 - 2⁴ = 647011 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 646987 and 647005.

It is not an unprimeable number, because it can be changed into a prime (647047) 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, 5243 + ... + 5364.

It is an arithmetic number, because the mean of its divisors is an integer number (164424).

2⁶⁴⁷⁰²⁷ is an apocalyptic number.

647027 is a deficient number, since it is larger than the sum of its proper divisors (10669).

647027 is a wasteful number, since it uses less digits than its factorization.

647027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10668.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 647027 is about 804.3798853775. The cubic root of 647027 is about 86.4916405211.

The spelling of 647027 in words is "six hundred forty-seven thousand, twenty-seven".