66057593 has 8 divisors (see below), whose sum is σ = 75976512. Its totient is φ = 56259216.

The previous prime is 66057583. The next prime is 66057611. The reversal of 66057593 is 39575066.

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 66057593 - 2⁸ = 66057337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66057593.

It is not an unprimeable number, because it can be changed into a prime (66057533) 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, 28955 + ... + 31152.

It is an arithmetic number, because the mean of its divisors is an integer number (9497064).

Almost surely, 2^66057593 is an apocalyptic number.

It is an amenable number.

66057593 is a deficient number, since it is larger than the sum of its proper divisors (9918919).

66057593 is a wasteful number, since it uses less digits than its factorization.

66057593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60271.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 66057593 is about 8127.5822358190. The cubic root of 66057593 is about 404.2415169457.

The spelling of 66057593 in words is "sixty-six million, fifty-seven thousand, five hundred ninety-three".