66348886 has 4 divisors (see below), whose sum is σ = 99523332. Its totient is φ = 33174442.

The previous prime is 66348869. The next prime is 66348889. The reversal of 66348886 is 68884366.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66348889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16587220 + ... + 16587223.

It is an arithmetic number, because the mean of its divisors is an integer number (24880833).

Almost surely, 2^66348886 is an apocalyptic number.

66348886 is a deficient number, since it is larger than the sum of its proper divisors (33174446).

66348886 is a wasteful number, since it uses less digits than its factorization.

66348886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33174445.

The product of its digits is 1327104, while the sum is 49.

The square root of 66348886 is about 8145.4825516970. The cubic root of 66348886 is about 404.8348379030.

The spelling of 66348886 in words is "sixty-six million, three hundred forty-eight thousand, eight hundred eighty-six".