66502349 has 2 divisors, whose sum is σ = 66502350. Its totient is φ = 66502348.

The previous prime is 66502301. The next prime is 66502367. The reversal of 66502349 is 94320566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44129449 + 22372900 = 6643^2 + 4730^2 .

It is a cyclic number.

It is not a de Polignac number, because 66502349 - 2²⁴ = 49725133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66502379) 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, 33251174 + 33251175.

It is an arithmetic number, because the mean of its divisors is an integer number (33251175).

Almost surely, 2^66502349 is an apocalyptic number.

It is an amenable number.

66502349 is a deficient number, since it is larger than the sum of its proper divisors (1).

66502349 is an equidigital number, since it uses as much as digits as its factorization.

66502349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 66502349 is about 8154.8972403090. The cubic root of 66502349 is about 405.1467212140.

The spelling of 66502349 in words is "sixty-six million, five hundred two thousand, three hundred forty-nine".