647671351 has 8 divisors (see below), whose sum is σ = 654968160. Its totient is φ = 640399392.

The previous prime is 647671337. The next prime is 647671357. The reversal of 647671351 is 153176746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 647671351 - 2⁷ = 647671223 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 (647671357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48921 + ... + 60733.

It is an arithmetic number, because the mean of its divisors is an integer number (81871020).

Almost surely, 2^647671351 is an apocalyptic number.

647671351 is a deficient number, since it is larger than the sum of its proper divisors (7296809).

647671351 is a wasteful number, since it uses less digits than its factorization.

647671351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425.

The product of its digits is 105840, while the sum is 40.

The square root of 647671351 is about 25449.3880280057. The cubic root of 647671351 is about 865.2034230381.

The spelling of 647671351 in words is "six hundred forty-seven million, six hundred seventy-one thousand, three hundred fifty-one".