6636872160 has 192 divisors, whose sum is σ = 23524300800. Its totient is φ = 1747339776.

The previous prime is 6636872153. The next prime is 6636872167. The reversal of 6636872160 is 612786366.

6636872160 is a `hidden beast` number, since 6 + 636 + 8 + 7 + 2 + 1 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6636872153) and next prime (6636872167).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636872167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331557 + ... + 351003.

It is an arithmetic number, because the mean of its divisors is an integer number (122522400).

Almost surely, 2^6636872160 is an apocalyptic number.

6636872160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6636872160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11762150400).

6636872160 is an abundant number, since it is smaller than the sum of its proper divisors (16887428640).

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

6636872160 is a wasteful number, since it uses less digits than its factorization.

6636872160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19550 (or 19536 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6636872160 is about 81467.0004357593. Note that the first 3 decimals coincide. The cubic root of 6636872160 is about 1879.2641000890.

The spelling of 6636872160 in words is "six billion, six hundred thirty-six million, eight hundred seventy-two thousand, one hundred sixty".