647095 has 4 divisors (see below), whose sum is σ = 776520. Its totient is φ = 517672.

The previous prime is 647081. The next prime is 647099. The reversal of 647095 is 590746.

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 647095 - 2¹⁷ = 516023 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647099) 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, 64705 + ... + 64714.

It is an arithmetic number, because the mean of its divisors is an integer number (194130).

2⁶⁴⁷⁰⁹⁵ is an apocalyptic number.

647095 is a deficient number, since it is larger than the sum of its proper divisors (129425).

647095 is a wasteful number, since it uses less digits than its factorization.

647095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129424.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 647095 is about 804.4221528526. The cubic root of 647095 is about 86.4946703923.

The spelling of 647095 in words is "six hundred forty-seven thousand, ninety-five".