666316082 has 4 divisors (see below), whose sum is σ = 999474126. Its totient is φ = 333158040.

The previous prime is 666316081. The next prime is 666316097. The reversal of 666316082 is 280613666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 280613666 = 2 ⋅140306833.

It can be written as a sum of positive squares in only one way, i.e., 644702881 + 21613201 = 25391^2 + 4649^2 .

It is a super-2 number, since 2×666316082² = 887954242263661448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666316081) 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 as a sum of consecutive naturals, namely, 166579019 + ... + 166579022.

Almost surely, 2^666316082 is an apocalyptic number.

666316082 is a deficient number, since it is larger than the sum of its proper divisors (333158044).

666316082 is a wasteful number, since it uses less digits than its factorization.

666316082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333158043.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 666316082 is about 25813.0990390538. The cubic root of 666316082 is about 873.4273059276.

The spelling of 666316082 in words is "six hundred sixty-six million, three hundred sixteen thousand, eighty-two".