2508322666 has 4 divisors (see below), whose sum is σ = 3762484002. Its totient is φ = 1254161332.

The previous prime is 2508322657. The next prime is 2508322703. The reversal of 2508322666 is 6662238052.

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

It can be written as a sum of positive squares in only one way, i.e., 2487116641 + 21206025 = 49871^2 + 4605^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 627080665 + ... + 627080668.

Almost surely, 2^2508322666 is an apocalyptic number.

2508322666 is a deficient number, since it is larger than the sum of its proper divisors (1254161336).

2508322666 is a wasteful number, since it uses less digits than its factorization.

2508322666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254161335.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2508322666 is about 50083.1575082882. The cubic root of 2508322666 is about 1358.7132195160.

The spelling of 2508322666 in words is "two billion, five hundred eight million, three hundred twenty-two thousand, six hundred sixty-six".