66185093 has 8 divisors (see below), whose sum is σ = 73575936. Its totient is φ = 59122800.

The previous prime is 66185089. The next prime is 66185101. The reversal of 66185093 is 39058166.

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 66185093 - 2² = 66185089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66185023) 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, 81713 + ... + 82518.

It is an arithmetic number, because the mean of its divisors is an integer number (9196992).

Almost surely, 2^66185093 is an apocalyptic number.

It is an amenable number.

66185093 is a deficient number, since it is larger than the sum of its proper divisors (7390843).

66185093 is a wasteful number, since it uses less digits than its factorization.

66185093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164275.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 66185093 is about 8135.4221156619. The cubic root of 66185093 is about 404.5014298811.

It can be divided in two parts, 6618 and 5093, that added together give a palindrome (11711).

The spelling of 66185093 in words is "sixty-six million, one hundred eighty-five thousand, ninety-three".