999010666 has 4 divisors (see below), whose sum is σ = 1498516002. Its totient is φ = 499505332.

The previous prime is 999010651. The next prime is 999010697. The reversal of 999010666 is 666010999.

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., 826850025 + 172160641 = 28755^2 + 13121^2 .

999010666 is a strobogrammatic number because it is the same when read upside-down.

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, 249752665 + ... + 249752668.

Almost surely, 2^999010666 is an apocalyptic number.

999010666 is a deficient number, since it is larger than the sum of its proper divisors (499505336).

999010666 is a wasteful number, since it uses less digits than its factorization.

999010666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499505335.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 999010666 is about 31607.1299867609. The cubic root of 999010666 is about 999.6701131867.

The spelling of 999010666 in words is "nine hundred ninety-nine million, ten thousand, six hundred sixty-six".