66114749 has 2 divisors, whose sum is σ = 66114750. Its totient is φ = 66114748.

The previous prime is 66114739. The next prime is 66114767. The reversal of 66114749 is 94741166.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 15960025 = 7082^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 66114749 - 2⁴ = 66114733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66114709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33057374 + 33057375.

It is an arithmetic number, because the mean of its divisors is an integer number (33057375).

Almost surely, 2^66114749 is an apocalyptic number.

It is an amenable number.

66114749 is a deficient number, since it is larger than the sum of its proper divisors (1).

66114749 is an equidigital number, since it uses as much as digits as its factorization.

66114749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 66114749 is about 8131.0976503791. The cubic root of 66114749 is about 404.3580726487.

The spelling of 66114749 in words is "sixty-six million, one hundred fourteen thousand, seven hundred forty-nine".