66888314 has 4 divisors (see below), whose sum is σ = 100332474. Its totient is φ = 33444156.

The previous prime is 66888299. The next prime is 66888317. The reversal of 66888314 is 41388866.

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., 50623225 + 16265089 = 7115^2 + 4033^2 .

It is not an unprimeable number, because it can be changed into a prime (66888317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16722077 + ... + 16722080.

Almost surely, 2^66888314 is an apocalyptic number.

66888314 is a deficient number, since it is larger than the sum of its proper divisors (33444160).

66888314 is a wasteful number, since it uses less digits than its factorization.

66888314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33444159.

The product of its digits is 221184, while the sum is 44.

The square root of 66888314 is about 8178.5276180985. The cubic root of 66888314 is about 405.9290039010.

The spelling of 66888314 in words is "sixty-six million, eight hundred eighty-eight thousand, three hundred fourteen".