6609461220 has 96 divisors (see below), whose sum is σ = 21645052800. Its totient is φ = 1669756032.

The previous prime is 6609461207. The next prime is 6609461251. The reversal of 6609461220 is 221649066.

6609461220 is a `hidden beast` number, since 6 + 609 + 46 + 1 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311839 + ... + 332358.

It is an arithmetic number, because the mean of its divisors is an integer number (225469300).

Almost surely, 2^6609461220 is an apocalyptic number.

6609461220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6609461220 is an abundant number, since it is smaller than the sum of its proper divisors (15035591580).

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

6609461220 is a wasteful number, since it uses less digits than its factorization.

6609461220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644234 (or 644226 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6609461220 is about 81298.5929767545. The cubic root of 6609461220 is about 1876.6733477729.

The spelling of 6609461220 in words is "six billion, six hundred nine million, four hundred sixty-one thousand, two hundred twenty".