2631064666 has 16 divisors (see below), whose sum is σ = 3989462400. Its totient is φ = 1301258880.

The previous prime is 2631064661. The next prime is 2631064717. The reversal of 2631064666 is 6664601362.

It is not an unprimeable number, because it can be changed into a prime (2631064661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637951 + ... + 642061.

It is an arithmetic number, because the mean of its divisors is an integer number (249341400).

Almost surely, 2^2631064666 is an apocalyptic number.

2631064666 is a deficient number, since it is larger than the sum of its proper divisors (1358397734).

2631064666 is a wasteful number, since it uses less digits than its factorization.

2631064666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2631064666 is about 51293.9047646014. The cubic root of 2631064666 is about 1380.5236173723.

The spelling of 2631064666 in words is "two billion, six hundred thirty-one million, sixty-four thousand, six hundred sixty-six".