66822236 has 24 divisors (see below), whose sum is σ = 129999744. Its totient is φ = 29845440.

The previous prime is 66822227. The next prime is 66822247. The reversal of 66822236 is 63222866.

It is a happy number.

It is a super-2 number, since 2×66822236² = 8930422448079392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66822196 and 66822205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19115 + ... + 22338.

It is an arithmetic number, because the mean of its divisors is an integer number (5416656).

Almost surely, 2^66822236 is an apocalyptic number.

It is an amenable number.

66822236 is a deficient number, since it is larger than the sum of its proper divisors (63177508).

66822236 is a wasteful number, since it uses less digits than its factorization.

66822236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41501 (or 41499 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 66822236 is about 8174.4868952124. The cubic root of 66822236 is about 405.7952893918.

The spelling of 66822236 in words is "sixty-six million, eight hundred twenty-two thousand, two hundred thirty-six".