66503222 has 8 divisors (see below), whose sum is σ = 99901272. Its totient is φ = 33202800.

The previous prime is 66503161. The next prime is 66503233. The reversal of 66503222 is 22230566.

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

It is a junction number, because it is equal to n+sod(n) for n = 66503191 and 66503200.

It is a congruent number.

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, 22679 + ... + 25442.

It is an arithmetic number, because the mean of its divisors is an integer number (12487659).

Almost surely, 2^66503222 is an apocalyptic number.

66503222 is a deficient number, since it is larger than the sum of its proper divisors (33398050).

66503222 is a wasteful number, since it uses less digits than its factorization.

66503222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48814.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66503222 is about 8154.9507662524. The cubic root of 66503222 is about 405.1484940413.

Adding to 66503222 its reverse (22230566), we get a palindrome (88733788).

The spelling of 66503222 in words is "sixty-six million, five hundred three thousand, two hundred twenty-two".