66022232 has 8 divisors (see below), whose sum is σ = 123791700. Its totient is φ = 33011112.

The previous prime is 66022211. The next prime is 66022273. The reversal of 66022232 is 23222066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66022198 and 66022207.

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 as a sum of consecutive naturals, namely, 4126382 + ... + 4126397.

Almost surely, 2^66022232 is an apocalyptic number.

It is an amenable number.

66022232 is a deficient number, since it is larger than the sum of its proper divisors (57769468).

66022232 is a wasteful number, since it uses less digits than its factorization.

66022232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252785 (or 8252781 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 66022232 is about 8125.4065744429. The cubic root of 66022232 is about 404.1693731541.

Adding to 66022232 its reverse (23222066), we get a palindrome (89244298).

The spelling of 66022232 in words is "sixty-six million, twenty-two thousand, two hundred thirty-two".