2577506066 has 12 divisors (see below), whose sum is σ = 4080457422. Its totient is φ = 1220923584.

The previous prime is 2577506053. The next prime is 2577506069. The reversal of 2577506066 is 6606057752.

It can be written as a sum of positive squares in only one way, i.e., 2008922041 + 568584025 = 44821^2 + 23845^2 .

It is not an unprimeable number, because it can be changed into a prime (2577506069) 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, 1784255 + ... + 1785698.

Almost surely, 2^2577506066 is an apocalyptic number.

2577506066 is a deficient number, since it is larger than the sum of its proper divisors (1502951356).

2577506066 is a wasteful number, since it uses less digits than its factorization.

2577506066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569993 (or 3569974 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 2577506066 is about 50769.1448224214. The cubic root of 2577506066 is about 1371.0919005743.

The spelling of 2577506066 in words is "two billion, five hundred seventy-seven million, five hundred six thousand, sixty-six".