64945183 has 2 divisors, whose sum is σ = 64945184. Its totient is φ = 64945182.

The previous prime is 64945171. The next prime is 64945201. The reversal of 64945183 is 38154946.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64945183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64945103) 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, 32472591 + 32472592.

It is an arithmetic number, because the mean of its divisors is an integer number (32472592).

Almost surely, 2^64945183 is an apocalyptic number.

64945183 is a deficient number, since it is larger than the sum of its proper divisors (1).

64945183 is an equidigital number, since it uses as much as digits as its factorization.

64945183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 64945183 is about 8058.8574252185. The cubic root of 64945183 is about 401.9595163146.

The spelling of 64945183 in words is "sixty-four million, nine hundred forty-five thousand, one hundred eighty-three".