2805217564 has 12 divisors (see below), whose sum is σ = 4909504600. Its totient is φ = 1402501968.

The previous prime is 2805217561. The next prime is 2805217577. The reversal of 2805217564 is 4657125082.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805217561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78007 + ... + 108145.

Almost surely, 2^2805217564 is an apocalyptic number.

It is an amenable number.

2805217564 is a deficient number, since it is larger than the sum of its proper divisors (2104287036).

2805217564 is a wasteful number, since it uses less digits than its factorization.

2805217564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53412 (or 53410 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2805217564 is about 52964.3046211314. The cubic root of 2805217564 is about 1410.3346730005.

The spelling of 2805217564 in words is "two billion, eight hundred five million, two hundred seventeen thousand, five hundred sixty-four".