66312254 has 8 divisors (see below), whose sum is σ = 100127568. Its totient is φ = 32936400.

The previous prime is 66312199. The next prime is 66312271. The reversal of 66312254 is 45221366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109487 + ... + 110090.

It is an arithmetic number, because the mean of its divisors is an integer number (12515946).

Almost surely, 2^66312254 is an apocalyptic number.

66312254 is a deficient number, since it is larger than the sum of its proper divisors (33815314).

66312254 is a wasteful number, since it uses less digits than its factorization.

66312254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219730.

The product of its digits is 8640, while the sum is 29.

The square root of 66312254 is about 8143.2336329004. The cubic root of 66312254 is about 404.7603194960.

It can be divided in two parts, 66312 and 254, that added together give a palindrome (66566).

The spelling of 66312254 in words is "sixty-six million, three hundred twelve thousand, two hundred fifty-four".