6634508220 has 36 divisors (see below), whose sum is σ = 20124675480. Its totient is φ = 1769202144.

The previous prime is 6634508219. The next prime is 6634508239. The reversal of 6634508220 is 228054366.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 18429010 + ... + 18429369.

Almost surely, 2^6634508220 is an apocalyptic number.

6634508220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6634508220 is an abundant number, since it is smaller than the sum of its proper divisors (13490167260).

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

6634508220 is a wasteful number, since it uses less digits than its factorization.

6634508220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36858394 (or 36858389 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 6634508220 is about 81452.4905696566. The cubic root of 6634508220 is about 1879.0409530494.

The spelling of 6634508220 in words is "six billion, six hundred thirty-four million, five hundred eight thousand, two hundred twenty".