647397282 has 32 divisors (see below), whose sum is σ = 1501857792. Its totient is φ = 182209104.

The previous prime is 647397277. The next prime is 647397287. The reversal of 647397282 is 282793746.

It is an interprime number because it is at equal distance from previous prime (647397277) and next prime (647397287).

It is not an unprimeable number, because it can be changed into a prime (647397287) 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 15 ways as a sum of consecutive naturals, for example, 112218 + ... + 117845.

It is an arithmetic number, because the mean of its divisors is an integer number (46933056).

Almost surely, 2^647397282 is an apocalyptic number.

647397282 is an abundant number, since it is smaller than the sum of its proper divisors (854460510).

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

647397282 is a wasteful number, since it uses less digits than its factorization.

647397282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230142.

The product of its digits is 1016064, while the sum is 48.

The square root of 647397282 is about 25444.0028690456. The cubic root of 647397282 is about 865.0813658189.

The spelling of 647397282 in words is "six hundred forty-seven million, three hundred ninety-seven thousand, two hundred eighty-two".