664287083 has 2 divisors, whose sum is σ = 664287084. Its totient is φ = 664287082.

The previous prime is 664287061. The next prime is 664287149. The reversal of 664287083 is 380782466.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664287083 is a prime.

It is not a weakly prime, because it can be changed into another prime (664287023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332143541 + 332143542.

It is an arithmetic number, because the mean of its divisors is an integer number (332143542).

Almost surely, 2^664287083 is an apocalyptic number.

664287083 is a deficient number, since it is larger than the sum of its proper divisors (1).

664287083 is an equidigital number, since it uses as much as digits as its factorization.

664287083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 664287083 is about 25773.7673420088. The cubic root of 664287083 is about 872.5398467310.

The spelling of 664287083 in words is "six hundred sixty-four million, two hundred eighty-seven thousand, eighty-three".