2646566662 has 4 divisors (see below), whose sum is σ = 3969849996. Its totient is φ = 1323283330.

The previous prime is 2646566653. The next prime is 2646566707. The reversal of 2646566662 is 2666656462.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 661641664 + ... + 661641667.

It is an arithmetic number, because the mean of its divisors is an integer number (992462499).

Almost surely, 2^2646566662 is an apocalyptic number.

2646566662 is a deficient number, since it is larger than the sum of its proper divisors (1323283334).

2646566662 is a wasteful number, since it uses less digits than its factorization.

2646566662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323283333.

The product of its digits is 3732480, while the sum is 49.

The square root of 2646566662 is about 51444.7923700738. The cubic root of 2646566662 is about 1383.2296167397.

The spelling of 2646566662 in words is "two billion, six hundred forty-six million, five hundred sixty-six thousand, six hundred sixty-two".