6654780252 has 72 divisors (see below), whose sum is σ = 16930145232. Its totient is φ = 2204025600.

The previous prime is 6654780247. The next prime is 6654780257. The reversal of 6654780252 is 2520874566.

6654780252 is a `hidden beast` number, since 6 + 6 + 547 + 80 + 25 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (6654780247) and next prime (6654780257).

It is a super-2 number, since 2×6654780252² = 88572200404818367008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6654780198 and 6654780207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6654780257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4662763 + ... + 4664189.

It is an arithmetic number, because the mean of its divisors is an integer number (235140906).

Almost surely, 2^6654780252 is an apocalyptic number.

It is an amenable number.

6654780252 is an abundant number, since it is smaller than the sum of its proper divisors (10275364980).

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

6654780252 is a wasteful number, since it uses less digits than its factorization.

6654780252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 6654780252 is about 81576.8364917395. The cubic root of 6654780252 is about 1880.9528378771.

The spelling of 6654780252 in words is "six billion, six hundred fifty-four million, seven hundred eighty thousand, two hundred fifty-two".