64006666667 has 2 divisors, whose sum is σ = 64006666668. Its totient is φ = 64006666666.

The previous prime is 64006666639. The next prime is 64006666681. The reversal of 64006666667 is 76666660046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64006666667 - 2¹⁴ = 64006650283 is a prime.

It is not a weakly prime, because it can be changed into another prime (64006666687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32003333333 + 32003333334.

It is an arithmetic number, because the mean of its divisors is an integer number (32003333334).

Almost surely, 2^64006666667 is an apocalyptic number.

64006666667 is a deficient number, since it is larger than the sum of its proper divisors (1).

64006666667 is an equidigital number, since it uses as much as digits as its factorization.

64006666667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 64006666667 in words is "sixty-four billion, six million, six hundred sixty-six thousand, six hundred sixty-seven".