2646664920 has 48 divisors (see below), whose sum is σ = 8601662160. Its totient is φ = 705777216.

The previous prime is 2646664913. The next prime is 2646664963. The reversal of 2646664920 is 294666462.

2646664920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3675564 + ... + 3676283.

It is an arithmetic number, because the mean of its divisors is an integer number (179201295).

Almost surely, 2^2646664920 is an apocalyptic number.

2646664920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646664920 is an abundant number, since it is smaller than the sum of its proper divisors (5954997240).

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

2646664920 is a wasteful number, since it uses less digits than its factorization.

2646664920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7351864 (or 7351857 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 2646664920 is about 51445.7473461121. The cubic root of 2646664920 is about 1383.2467347283.

The spelling of 2646664920 in words is "two billion, six hundred forty-six million, six hundred sixty-four thousand, nine hundred twenty".