2805756645 has 8 divisors (see below), whose sum is σ = 4489210656. Its totient is φ = 1496403536.

The previous prime is 2805756643. The next prime is 2805756647. The reversal of 2805756645 is 5466575082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2805756643) and next prime (2805756647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2805756645 - 2¹ = 2805756643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2805756594 and 2805756603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805756643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93525207 + ... + 93525236.

It is an arithmetic number, because the mean of its divisors is an integer number (561151332).

Almost surely, 2^2805756645 is an apocalyptic number.

It is an amenable number.

2805756645 is a deficient number, since it is larger than the sum of its proper divisors (1683454011).

2805756645 is a wasteful number, since it uses less digits than its factorization.

2805756645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187050451.

The product of its (nonzero) digits is 2016000, while the sum is 48.

The square root of 2805756645 is about 52969.3934739676. The cubic root of 2805756645 is about 1410.4250089444.

The spelling of 2805756645 in words is "two billion, eight hundred five million, seven hundred fifty-six thousand, six hundred forty-five".