66585238 has 8 divisors (see below), whose sum is σ = 100476432. Its totient is φ = 33093096.

The previous prime is 66585227. The next prime is 66585251. The reversal of 66585238 is 83258566.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 66585194 and 66585203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99345 + ... + 100012.

It is an arithmetic number, because the mean of its divisors is an integer number (12559554).

Almost surely, 2^66585238 is an apocalyptic number.

66585238 is a deficient number, since it is larger than the sum of its proper divisors (33891194).

66585238 is a wasteful number, since it uses less digits than its factorization.

66585238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199526.

The product of its digits is 345600, while the sum is 43.

The square root of 66585238 is about 8159.9778185973. The cubic root of 66585238 is about 405.3149772449.

The spelling of 66585238 in words is "sixty-six million, five hundred eighty-five thousand, two hundred thirty-eight".