66241438 has 12 divisors (see below), whose sum is σ = 100909368. Its totient is φ = 32606420.

The previous prime is 66241411. The next prime is 66241477. The reversal of 66241438 is 83414266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96645 + ... + 97327.

It is an arithmetic number, because the mean of its divisors is an integer number (8409114).

Almost surely, 2^66241438 is an apocalyptic number.

66241438 is a deficient number, since it is larger than the sum of its proper divisors (34667930).

66241438 is an frugal number, since it uses more digits than its factorization.

66241438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 756 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 66241438 is about 8138.8843215763. The cubic root of 66241438 is about 404.6161846665.

The spelling of 66241438 in words is "sixty-six million, two hundred forty-one thousand, four hundred thirty-eight".