2640331008 has 216 divisors, whose sum is σ = 8982611456. Its totient is φ = 729907200.

The previous prime is 2640331003. The next prime is 2640331027. The reversal of 2640331008 is 8001330462.

It is a happy number.

2640331008 is a `hidden beast` number, since 2 + 640 + 3 + 3 + 10 + 0 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2640331003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497328 + ... + 502608.

Almost surely, 2^2640331008 is an apocalyptic number.

2640331008 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 2640331008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4491305728).

2640331008 is an abundant number, since it is smaller than the sum of its proper divisors (6342280448).

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

2640331008 is a wasteful number, since it uses less digits than its factorization.

2640331008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5341 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2640331008 is about 51384.1513309308. The cubic root of 2640331008 is about 1382.1424063502.

The spelling of 2640331008 in words is "two billion, six hundred forty million, three hundred thirty-one thousand, eight".