6652749420 has 144 divisors (see below), whose sum is σ = 21275025408. Its totient is φ = 1680243840.

The previous prime is 6652749413. The next prime is 6652749463. The reversal of 6652749420 is 249472566.

6652749420 is a `hidden beast` number, since 66 + 527 + 49 + 4 + 20 = 666.

It is a super-3 number, since 3×6652749420³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249577 + ... + 274943.

It is an arithmetic number, because the mean of its divisors is an integer number (147743232).

Almost surely, 2^6652749420 is an apocalyptic number.

6652749420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6652749420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10637512704).

6652749420 is an abundant number, since it is smaller than the sum of its proper divisors (14622275988).

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

6652749420 is a wasteful number, since it uses less digits than its factorization.

6652749420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25460 (or 25455 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 6652749420 is about 81564.3881850407. The cubic root of 6652749420 is about 1880.7614823048.

The spelling of 6652749420 in words is "six billion, six hundred fifty-two million, seven hundred forty-nine thousand, four hundred twenty".