666034065 has 12 divisors (see below), whose sum is σ = 1154459124. Its totient is φ = 355218144.

The previous prime is 666034027. The next prime is 666034073. The reversal of 666034065 is 560430666.

It can be written as a sum of positive squares in 2 ways, for example, as 314246529 + 351787536 = 17727^2 + 18756^2 .

It is not a de Polignac number, because 666034065 - 2⁶ = 666034001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7400334 + ... + 7400423.

It is an arithmetic number, because the mean of its divisors is an integer number (96204927).

Almost surely, 2^666034065 is an apocalyptic number.

It is an amenable number.

666034065 is a deficient number, since it is larger than the sum of its proper divisors (488425059).

666034065 is a wasteful number, since it uses less digits than its factorization.

666034065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14800768 (or 14800765 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 666034065 is about 25807.6357886576. The cubic root of 666034065 is about 873.3040630628.

The spelling of 666034065 in words is "six hundred sixty-six million, thirty-four thousand, sixty-five".