66822622 has 4 divisors (see below), whose sum is σ = 100233936. Its totient is φ = 33411310.

The previous prime is 66822617. The next prime is 66822689. The reversal of 66822622 is 22622866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16705654 + ... + 16705657.

It is an arithmetic number, because the mean of its divisors is an integer number (25058484).

Almost surely, 2^66822622 is an apocalyptic number.

66822622 is a deficient number, since it is larger than the sum of its proper divisors (33411314).

66822622 is a wasteful number, since it uses less digits than its factorization.

66822622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33411313.

The product of its digits is 27648, while the sum is 34.

The square root of 66822622 is about 8174.5105052229. The cubic root of 66822622 is about 405.7960707518.

The spelling of 66822622 in words is "sixty-six million, eight hundred twenty-two thousand, six hundred twenty-two".