66241427 has 4 divisors (see below), whose sum is σ = 75704496. Its totient is φ = 56778360.

The previous prime is 66241411. The next prime is 66241477. The reversal of 66241427 is 72414266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66241427 - 2⁴ = 66241411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66241393 and 66241402.

It is not an unprimeable number, because it can be changed into a prime (66241477) 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, 4731524 + ... + 4731537.

It is an arithmetic number, because the mean of its divisors is an integer number (18926124).

Almost surely, 2^66241427 is an apocalyptic number.

66241427 is a deficient number, since it is larger than the sum of its proper divisors (9463069).

66241427 is an equidigital number, since it uses as much as digits as its factorization.

66241427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463068.

The product of its digits is 16128, while the sum is 32.

The square root of 66241427 is about 8138.8836458079. The cubic root of 66241427 is about 404.6161622698.

The spelling of 66241427 in words is "sixty-six million, two hundred forty-one thousand, four hundred twenty-seven".