66006241 has 4 divisors (see below), whose sum is σ = 75435712. Its totient is φ = 56576772.

The previous prime is 66006221. The next prime is 66006263. The reversal of 66006241 is 14260066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66006241 - 2⁹ = 66005729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66006221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4714725 + ... + 4714738.

It is an arithmetic number, because the mean of its divisors is an integer number (18858928).

Almost surely, 2^66006241 is an apocalyptic number.

It is an amenable number.

66006241 is a deficient number, since it is larger than the sum of its proper divisors (9429471).

66006241 is an equidigital number, since it uses as much as digits as its factorization.

66006241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9429470.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 66006241 is about 8124.4225025536. The cubic root of 66006241 is about 404.1367397309.

The spelling of 66006241 in words is "sixty-six million, six thousand, two hundred forty-one".