2664440420 has 24 divisors (see below), whose sum is σ = 5597714304. Its totient is φ = 1065321056.

The previous prime is 2664440399. The next prime is 2664440423. The reversal of 2664440420 is 240444662.

It is not an unprimeable number, because it can be changed into a prime (2664440423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21719 + ... + 76161.

It is an arithmetic number, because the mean of its divisors is an integer number (233238096).

Almost surely, 2^2664440420 is an apocalyptic number.

2664440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2664440420 is an abundant number, since it is smaller than the sum of its proper divisors (2933273884).

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

2664440420 is a wasteful number, since it uses less digits than its factorization.

2664440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56899 (or 56897 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 2664440420 is about 51618.2179080216. The cubic root of 2664440420 is about 1386.3365429569.

The spelling of 2664440420 in words is "two billion, six hundred sixty-four million, four hundred forty thousand, four hundred twenty".