664474084567 has 2 divisors, whose sum is σ = 664474084568. Its totient is φ = 664474084566.

The previous prime is 664474084531. The next prime is 664474084577. The reversal of 664474084567 is 765480474466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664474084567 - 2³⁹ = 114718270679 is a prime.

It is a super-2 number, since 2×664474084567² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664474084577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332237042283 + 332237042284.

It is an arithmetic number, because the mean of its divisors is an integer number (332237042284).

Almost surely, 2^664474084567 is an apocalyptic number.

664474084567 is a deficient number, since it is larger than the sum of its proper divisors (1).

664474084567 is an equidigital number, since it uses as much as digits as its factorization.

664474084567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108380160, while the sum is 61.

The spelling of 664474084567 in words is "six hundred sixty-four billion, four hundred seventy-four million, eighty-four thousand, five hundred sixty-seven".