64169983 has 2 divisors, whose sum is σ = 64169984. Its totient is φ = 64169982.

The previous prime is 64169981. The next prime is 64170077. The reversal of 64169983 is 38996146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64169983 - 2¹ = 64169981 is a prime.

Together with 64169981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64169981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32084991 + 32084992.

It is an arithmetic number, because the mean of its divisors is an integer number (32084992).

Almost surely, 2^64169983 is an apocalyptic number.

64169983 is a deficient number, since it is larger than the sum of its proper divisors (1).

64169983 is an equidigital number, since it uses as much as digits as its factorization.

64169983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 64169983 is about 8010.6168925995. The cubic root of 64169983 is about 400.3538181894.

The spelling of 64169983 in words is "sixty-four million, one hundred sixty-nine thousand, nine hundred eighty-three".