2580626686 has 16 divisors (see below), whose sum is σ = 4246180848. Its totient is φ = 1166529600.

The previous prime is 2580626677. The next prime is 2580626687. The reversal of 2580626686 is 6866260852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580626687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320055 + ... + 328018.

It is an arithmetic number, because the mean of its divisors is an integer number (265386303).

Almost surely, 2^2580626686 is an apocalyptic number.

2580626686 is a deficient number, since it is larger than the sum of its proper divisors (1665554162).

2580626686 is a wasteful number, since it uses less digits than its factorization.

2580626686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648267.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The square root of 2580626686 is about 50799.8689565239. The cubic root of 2580626686 is about 1371.6450103266.

The spelling of 2580626686 in words is "two billion, five hundred eighty million, six hundred twenty-six thousand, six hundred eighty-six".