647880282 has 96 divisors (see below), whose sum is σ = 1675669632. Its totient is φ = 183777984.

The previous prime is 647880263. The next prime is 647880287. The reversal of 647880282 is 282088746.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (647880287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 533508 + ... + 534720.

It is an arithmetic number, because the mean of its divisors is an integer number (17454892).

Almost surely, 2^647880282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647880282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837834816).

647880282 is an abundant number, since it is smaller than the sum of its proper divisors (1027789350).

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

647880282 is a wasteful number, since it uses less digits than its factorization.

647880282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 647880282 is about 25453.4925304957. The cubic root of 647880282 is about 865.2964477806.

The spelling of 647880282 in words is "six hundred forty-seven million, eight hundred eighty thousand, two hundred eighty-two".