64923983 has 2 divisors, whose sum is σ = 64923984. Its totient is φ = 64923982.

The previous prime is 64923941. The next prime is 64924129. The reversal of 64923983 is 38932946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64923983 - 2¹² = 64919887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64923913) 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, 32461991 + 32461992.

It is an arithmetic number, because the mean of its divisors is an integer number (32461992).

Almost surely, 2^64923983 is an apocalyptic number.

64923983 is a deficient number, since it is larger than the sum of its proper divisors (1).

64923983 is an equidigital number, since it uses as much as digits as its factorization.

64923983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 64923983 is about 8057.5419949262. The cubic root of 64923983 is about 401.9157744555.

The spelling of 64923983 in words is "sixty-four million, nine hundred twenty-three thousand, nine hundred eighty-three".