2566064808 has 24 divisors (see below), whose sum is σ = 6949759050. Its totient is φ = 855354912.

The previous prime is 2566064803. The next prime is 2566064819. The reversal of 2566064808 is 8084606652.

2566064808 is a `hidden beast` number, since 2 + 566 + 0 + 6 + 4 + 80 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1386966564 + 1179098244 = 37242^2 + 34338^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (2566064803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17819823 + ... + 17819966.

Almost surely, 2^2566064808 is an apocalyptic number.

It is an amenable number.

2566064808 is an abundant number, since it is smaller than the sum of its proper divisors (4383694242).

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

2566064808 is a wasteful number, since it uses less digits than its factorization.

2566064808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35639801 (or 35639794 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 2566064808 is about 50656.3402547006. The cubic root of 2566064808 is about 1369.0601841079.

The spelling of 2566064808 in words is "two billion, five hundred sixty-six million, sixty-four thousand, eight hundred eight".