66342266 has 4 divisors (see below), whose sum is σ = 99513402. Its totient is φ = 33171132.

The previous prime is 66342257. The next prime is 66342271. The reversal of 66342266 is 66224366.

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

It can be written as a sum of positive squares in only one way, i.e., 60918025 + 5424241 = 7805^2 + 2329^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16585565 + ... + 16585568.

Almost surely, 2^66342266 is an apocalyptic number.

66342266 is a deficient number, since it is larger than the sum of its proper divisors (33171136).

66342266 is a wasteful number, since it uses less digits than its factorization.

66342266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33171135.

The product of its digits is 62208, while the sum is 35.

The square root of 66342266 is about 8145.0761813503. The cubic root of 66342266 is about 404.8213732420.

The spelling of 66342266 in words is "sixty-six million, three hundred forty-two thousand, two hundred sixty-six".