670164563 has 2 divisors, whose sum is σ = 670164564. Its totient is φ = 670164562.

The previous prime is 670164559. The next prime is 670164569. The reversal of 670164563 is 365461076.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670164563 - 2² = 670164559 is a prime.

It is not a weakly prime, because it can be changed into another prime (670164569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335082281 + 335082282.

It is an arithmetic number, because the mean of its divisors is an integer number (335082282).

Almost surely, 2^670164563 is an apocalyptic number.

670164563 is a deficient number, since it is larger than the sum of its proper divisors (1).

670164563 is an equidigital number, since it uses as much as digits as its factorization.

670164563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 670164563 is about 25887.5368275933. The cubic root of 670164563 is about 875.1056473253.

The spelling of 670164563 in words is "six hundred seventy million, one hundred sixty-four thousand, five hundred sixty-three".