6646628248 has 16 divisors (see below), whose sum is σ = 13421076480. Its totient is φ = 3067674528.

The previous prime is 6646628239. The next prime is 6646628273. The reversal of 6646628248 is 8428266466.

It is a super-2 number, since 2×6646628248² = 88355334134223099008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 6646628195 and 6646628204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31954840 + ... + 31955047.

It is an arithmetic number, because the mean of its divisors is an integer number (838817280).

Almost surely, 2^6646628248 is an apocalyptic number.

It is an amenable number.

6646628248 is an abundant number, since it is smaller than the sum of its proper divisors (6774448232).

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

6646628248 is a wasteful number, since it uses less digits than its factorization.

6646628248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63909906 (or 63909902 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 52.

The square root of 6646628248 is about 81526.8559923661. The cubic root of 6646628248 is about 1880.1844778984.

The spelling of 6646628248 in words is "six billion, six hundred forty-six million, six hundred twenty-eight thousand, two hundred forty-eight".