66349238 has 8 divisors (see below), whose sum is σ = 102734400. Its totient is φ = 32104440.

The previous prime is 66349219. The next prime is 66349259. The reversal of 66349238 is 83294366.

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 = 66349195 and 66349204.

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, 535013 + ... + 535136.

It is an arithmetic number, because the mean of its divisors is an integer number (12841800).

Almost surely, 2^66349238 is an apocalyptic number.

66349238 is a deficient number, since it is larger than the sum of its proper divisors (36385162).

66349238 is a wasteful number, since it uses less digits than its factorization.

66349238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070182.

The product of its digits is 186624, while the sum is 41.

The square root of 66349238 is about 8145.5041587369. The cubic root of 66349238 is about 404.8355538236.

The spelling of 66349238 in words is "sixty-six million, three hundred forty-nine thousand, two hundred thirty-eight".