66226949 has 2 divisors, whose sum is σ = 66226950. Its totient is φ = 66226948.

The previous prime is 66226933. The next prime is 66226999. The reversal of 66226949 is 94962266.

66226949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34304449 + 31922500 = 5857^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 66226949 - 2⁴ = 66226933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66226999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33113474 + 33113475.

It is an arithmetic number, because the mean of its divisors is an integer number (33113475).

Almost surely, 2^66226949 is an apocalyptic number.

It is an amenable number.

66226949 is a deficient number, since it is larger than the sum of its proper divisors (1).

66226949 is an equidigital number, since it uses as much as digits as its factorization.

66226949 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 66226949 is about 8137.9941631830. The cubic root of 66226949 is about 404.5866819284.

The spelling of 66226949 in words is "sixty-six million, two hundred twenty-six thousand, nine hundred forty-nine".