66095749 has 2 divisors, whose sum is σ = 66095750. Its totient is φ = 66095748.

The previous prime is 66095707. The next prime is 66095759. The reversal of 66095749 is 94759066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53027524 + 13068225 = 7282^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 66095749 - 2¹⁹ = 65571461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66095699 and 66095708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66095759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33047874 + 33047875.

It is an arithmetic number, because the mean of its divisors is an integer number (33047875).

Almost surely, 2^66095749 is an apocalyptic number.

It is an amenable number.

66095749 is a deficient number, since it is larger than the sum of its proper divisors (1).

66095749 is an equidigital number, since it uses as much as digits as its factorization.

66095749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 66095749 is about 8129.9292124840. The cubic root of 66095749 is about 404.3193342452.

The spelling of 66095749 in words is "sixty-six million, ninety-five thousand, seven hundred forty-nine".