6548909628 has 12 divisors (see below), whose sum is σ = 15280789160. Its totient is φ = 2182969872.

The previous prime is 6548909617. The next prime is 6548909629. The reversal of 6548909628 is 8269098456.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×6548909628² = 85776434631422196768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6548909629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272871223 + ... + 272871246.

Almost surely, 2^6548909628 is an apocalyptic number.

It is an amenable number.

6548909628 is an abundant number, since it is smaller than the sum of its proper divisors (8731879532).

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

6548909628 is a wasteful number, since it uses less digits than its factorization.

6548909628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545742476 (or 545742474 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The square root of 6548909628 is about 80925.3336601092. Note that the first 3 decimals coincide. The cubic root of 6548909628 is about 1870.9248028443.

The spelling of 6548909628 in words is "six billion, five hundred forty-eight million, nine hundred nine thousand, six hundred twenty-eight".