647346 has 16 divisors (see below), whose sum is σ = 1479744. Its totient is φ = 184944.

The previous prime is 647341. The next prime is 647357. The reversal of 647346 is 643746.

It is a d-powerful number, because it can be written as 6⁴ + 4² + 3¹² + 7⁴ + 4⁸ + 6⁶ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647346.

It is not an unprimeable number, because it can be changed into a prime (647341) by changing a digit.

647346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7665 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (92484).

2⁶⁴⁷³⁴⁶ is an apocalyptic number.

647346 is an abundant number, since it is smaller than the sum of its proper divisors (832398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647346 is a wasteful number, since it uses less digits than its factorization.

647346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15425.

The product of its digits is 12096, while the sum is 30.

The square root of 647346 is about 804.5781503372. The cubic root of 647346 is about 86.5058523444.

Subtracting from 647346 its reverse (643746), we obtain a square (3600 = 60²).

The spelling of 647346 in words is "six hundred forty-seven thousand, three hundred forty-six".