2076646645 has 32 divisors (see below), whose sum is σ = 2803442400. Its totient is φ = 1468809216.

The previous prime is 2076646643. The next prime is 2076646661. The reversal of 2076646645 is 5466466702.

It can be written as a sum of positive squares in 16 ways, for example, as 326814084 + 1749832561 = 18078^2 + 41831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2076646645 - 2¹ = 2076646643 is a prime.

It is a super-2 number, since 2×2076646645² = 8624922576379512050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2076646595 and 2076646604.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79821 + ... + 102589.

It is an arithmetic number, because the mean of its divisors is an integer number (87607575).

Almost surely, 2^2076646645 is an apocalyptic number.

It is an amenable number.

2076646645 is a deficient number, since it is larger than the sum of its proper divisors (726795755).

2076646645 is a wasteful number, since it uses less digits than its factorization.

2076646645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22857.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The square root of 2076646645 is about 45570.2385883594. The cubic root of 2076646645 is about 1275.8145035281.

The spelling of 2076646645 in words is "two billion, seventy-six million, six hundred forty-six thousand, six hundred forty-five".