647134 has 4 divisors (see below), whose sum is σ = 970704. Its totient is φ = 323566.

The previous prime is 647131. The next prime is 647147. The reversal of 647134 is 431746.

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

It is a junction number, because it is equal to n+sod(n) for n = 647099 and 647108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161782 + ... + 161785.

It is an arithmetic number, because the mean of its divisors is an integer number (242676).

2⁶⁴⁷¹³⁴ is an apocalyptic number.

647134 is a deficient number, since it is larger than the sum of its proper divisors (323570).

647134 is a wasteful number, since it uses less digits than its factorization.

647134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323569.

The product of its digits is 2016, while the sum is 25.

The square root of 647134 is about 804.4463934906. The cubic root of 647134 is about 86.4964080168.

It can be divided in two parts, 64713 and 4, that multiplied together give a palindrome (258852).

The spelling of 647134 in words is "six hundred forty-seven thousand, one hundred thirty-four".