6646424620 has 48 divisors (see below), whose sum is σ = 15238748448. Its totient is φ = 2414914560.

The previous prime is 6646424611. The next prime is 6646424623. The reversal of 6646424620 is 264246466.

It is not an unprimeable number, because it can be changed into a prime (6646424623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273694 + ... + 296986.

It is an arithmetic number, because the mean of its divisors is an integer number (317473926).

Almost surely, 2^6646424620 is an apocalyptic number.

It is an amenable number.

6646424620 is an abundant number, since it is smaller than the sum of its proper divisors (8592323828).

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

6646424620 is a wasteful number, since it uses less digits than its factorization.

6646424620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24610 (or 24608 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 6646424620 is about 81525.6071427867. The cubic root of 6646424620 is about 1880.1652770796.

The spelling of 6646424620 in words is "six billion, six hundred forty-six million, four hundred twenty-four thousand, six hundred twenty".