2664821964 has 24 divisors (see below), whose sum is σ = 7106192128. Its totient is φ = 761377680.

The previous prime is 2664821941. The next prime is 2664822007. The reversal of 2664821964 is 4691284662.

It is a super-3 number, since 3×2664821964³ (a number of 29 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 15861952 + ... + 15862119.

Almost surely, 2^2664821964 is an apocalyptic number.

It is an amenable number.

2664821964 is an abundant number, since it is smaller than the sum of its proper divisors (4441370164).

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

2664821964 is a wasteful number, since it uses less digits than its factorization.

2664821964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31724085 (or 31724083 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 2664821964 is about 51621.9136026552. The cubic root of 2664821964 is about 1386.4027135919.

The spelling of 2664821964 in words is "two billion, six hundred sixty-four million, eight hundred twenty-one thousand, nine hundred sixty-four".