966664379 has 2 divisors, whose sum is σ = 966664380. Its totient is φ = 966664378.

The previous prime is 966664357. The next prime is 966664441. The reversal of 966664379 is 973466669.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-966664379 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (966664879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483332189 + 483332190.

It is an arithmetic number, because the mean of its divisors is an integer number (483332190).

Almost surely, 2^966664379 is an apocalyptic number.

966664379 is a deficient number, since it is larger than the sum of its proper divisors (1).

966664379 is an equidigital number, since it uses as much as digits as its factorization.

966664379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 56.

The square root of 966664379 is about 31091.2267207327. The cubic root of 966664379 is about 988.7623137947.

The spelling of 966664379 in words is "nine hundred sixty-six million, six hundred sixty-four thousand, three hundred seventy-nine".