2076646644 has 72 divisors (see below), whose sum is σ = 5392427040. Its totient is φ = 673468992.

The previous prime is 2076646643. The next prime is 2076646661. The reversal of 2076646644 is 4466466702.

It is a super-2 number, since 2×2076646644² = 8624922568072925472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2076646644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2076646643) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 413919 + ... + 418905.

It is an arithmetic number, because the mean of its divisors is an integer number (74894820).

Almost surely, 2^2076646644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2076646644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2696213520).

2076646644 is an abundant number, since it is smaller than the sum of its proper divisors (3315780396).

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

2076646644 is a wasteful number, since it uses less digits than its factorization.

2076646644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309 (or 5304 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The square root of 2076646644 is about 45570.2385773873. The cubic root of 2076646644 is about 1275.8145033233.

The spelling of 2076646644 in words is "two billion, seventy-six million, six hundred forty-six thousand, six hundred forty-four".