666076065 has 32 divisors (see below), whose sum is σ = 1187809920. Its totient is φ = 316744704.

The previous prime is 666076051. The next prime is 666076087. The reversal of 666076065 is 560670666.

666076065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666076065 - 2⁴ = 666076049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63894 + ... + 73583.

It is an arithmetic number, because the mean of its divisors is an integer number (37119060).

Almost surely, 2^666076065 is an apocalyptic number.

It is an amenable number.

666076065 is a deficient number, since it is larger than the sum of its proper divisors (521733855).

666076065 is a wasteful number, since it uses less digits than its factorization.

666076065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137521.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 666076065 is about 25808.4494884912. The cubic root of 666076065 is about 873.3224194811.

The spelling of 666076065 in words is "six hundred sixty-six million, seventy-six thousand, sixty-five".