652639284 has 144 divisors (see below), whose sum is σ = 1912135680. Its totient is φ = 185613120.

The previous prime is 652639261. The next prime is 652639289. The reversal of 652639284 is 482936256.

652639284 is a `hidden beast` number, since 6 + 5 + 2 + 639 + 2 + 8 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652639289) 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, 955207 + ... + 955889.

It is an arithmetic number, because the mean of its divisors is an integer number (13278720).

Almost surely, 2^652639284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652639284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956067840).

652639284 is an abundant number, since it is smaller than the sum of its proper divisors (1259496396).

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

652639284 is a wasteful number, since it uses less digits than its factorization.

652639284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 845 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 652639284 is about 25546.8057494474. The cubic root of 652639284 is about 867.4099584587.

It can be divided in two parts, 65263 and 9284, that added together give a palindrome (74547).

The spelling of 652639284 in words is "six hundred fifty-two million, six hundred thirty-nine thousand, two hundred eighty-four".