66741393 has 8 divisors (see below), whose sum is σ = 89038656. Its totient is φ = 44469200.

The previous prime is 66741391. The next prime is 66741401. The reversal of 66741393 is 39314766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66741393 - 2¹ = 66741391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66741391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228 + ... + 11618.

It is an arithmetic number, because the mean of its divisors is an integer number (11129832).

Almost surely, 2^66741393 is an apocalyptic number.

It is an amenable number.

66741393 is a deficient number, since it is larger than the sum of its proper divisors (22297263).

66741393 is a wasteful number, since it uses less digits than its factorization.

66741393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12535.

The product of its digits is 81648, while the sum is 39.

The square root of 66741393 is about 8169.5405623572. The cubic root of 66741393 is about 405.6315766861.

The spelling of 66741393 in words is "sixty-six million, seven hundred forty-one thousand, three hundred ninety-three".