66532222 has 8 divisors (see below), whose sum is σ = 99850176. Its totient is φ = 33248832.

The previous prime is 66532201. The next prime is 66532241. The reversal of 66532222 is 22223566.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123 + ... + 11950.

It is an arithmetic number, because the mean of its divisors is an integer number (12481272).

Almost surely, 2^66532222 is an apocalyptic number.

66532222 is a deficient number, since it is larger than the sum of its proper divisors (33317954).

66532222 is a wasteful number, since it uses less digits than its factorization.

66532222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17282.

The product of its digits is 8640, while the sum is 28.

The square root of 66532222 is about 8156.7286334657. The cubic root of 66532222 is about 405.2073763960.

Adding to 66532222 its reverse (22223566), we get a palindrome (88755788).

The spelling of 66532222 in words is "sixty-six million, five hundred thirty-two thousand, two hundred twenty-two".