2664623808 has 336 divisors, whose sum is σ = 9664452096. Its totient is φ = 681799680.

The previous prime is 2664623803. The next prime is 2664623869. The reversal of 2664623808 is 8083264662.

2664623808 is a `hidden beast` number, since 266 + 4 + 6 + 2 + 380 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is not an unprimeable number, because it can be changed into a prime (2664623803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3237285 + ... + 3238107.

Almost surely, 2^2664623808 is an apocalyptic number.

2664623808 is a gapful number since it is divisible by the number (28) 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 2664623808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4832226048).

2664623808 is an abundant number, since it is smaller than the sum of its proper divisors (6999828288).

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

2664623808 is a wasteful number, since it uses less digits than its factorization.

2664623808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 2664623808 is about 51619.9942657881. The cubic root of 2664623808 is about 1386.3683484661.

The spelling of 2664623808 in words is "two billion, six hundred sixty-four million, six hundred twenty-three thousand, eight hundred eight".