66464228 has 12 divisors (see below), whose sum is σ = 117027120. Its totient is φ = 33027912.

The previous prime is 66464213. The next prime is 66464231. The reversal of 66464228 is 82246466.

It is a junction number, because it is equal to n+sod(n) for n = 66464191 and 66464200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50318 + ... + 51621.

It is an arithmetic number, because the mean of its divisors is an integer number (9752260).

Almost surely, 2^66464228 is an apocalyptic number.

It is an amenable number.

66464228 is a deficient number, since it is larger than the sum of its proper divisors (50562892).

66464228 is a wasteful number, since it uses less digits than its factorization.

66464228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102106 (or 102104 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 66464228 is about 8152.5595980649. The cubic root of 66464228 is about 405.0692926198.

The spelling of 66464228 in words is "sixty-six million, four hundred sixty-four thousand, two hundred twenty-eight".