66241366 has 4 divisors (see below), whose sum is σ = 99362052. Its totient is φ = 33120682.

The previous prime is 66241339. The next prime is 66241369. The reversal of 66241366 is 66314266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66314266 = 2 ⋅33157133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66241369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560340 + ... + 16560343.

It is an arithmetic number, because the mean of its divisors is an integer number (24840513).

Almost surely, 2^66241366 is an apocalyptic number.

66241366 is a deficient number, since it is larger than the sum of its proper divisors (33120686).

66241366 is a wasteful number, since it uses less digits than its factorization.

66241366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33120685.

The product of its digits is 31104, while the sum is 34.

The square root of 66241366 is about 8138.8798983644. The cubic root of 66241366 is about 404.6160380696.

Subtracting 66241366 from its reverse (66314266), we obtain a square (72900 = 270²).

The spelling of 66241366 in words is "sixty-six million, two hundred forty-one thousand, three hundred sixty-six".