66846238 has 4 divisors (see below), whose sum is σ = 100269360. Its totient is φ = 33423118.

The previous prime is 66846229. The next prime is 66846239. The reversal of 66846238 is 83264866.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 66846194 and 66846203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66846239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16711558 + ... + 16711561.

It is an arithmetic number, because the mean of its divisors is an integer number (25067340).

Almost surely, 2^66846238 is an apocalyptic number.

66846238 is a deficient number, since it is larger than the sum of its proper divisors (33423122).

66846238 is a wasteful number, since it uses less digits than its factorization.

66846238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33423121.

The product of its digits is 331776, while the sum is 43.

The square root of 66846238 is about 8175.9548677815. The cubic root of 66846238 is about 405.8438696907.

The spelling of 66846238 in words is "sixty-six million, eight hundred forty-six thousand, two hundred thirty-eight".