2644830680 has 32 divisors (see below), whose sum is σ = 6048429840. Its totient is φ = 1040588160.

The previous prime is 2644830673. The next prime is 2644830731. The reversal of 2644830680 is 860384462.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 539534 + ... + 544413.

Almost surely, 2^2644830680 is an apocalyptic number.

2644830680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2644830680 is an abundant number, since it is smaller than the sum of its proper divisors (3403599160).

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

2644830680 is a wasteful number, since it uses less digits than its factorization.

2644830680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084019 (or 1084015 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 2644830680 is about 51427.9173212371. The cubic root of 2644830680 is about 1382.9271132524.

The spelling of 2644830680 in words is "two billion, six hundred forty-four million, eight hundred thirty thousand, six hundred eighty".