66450822 has 8 divisors (see below), whose sum is σ = 132901656. Its totient is φ = 22150272.

The previous prime is 66450821. The next prime is 66450859. The reversal of 66450822 is 22805466.

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

66450822 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66450821) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5537563 + ... + 5537574.

It is an arithmetic number, because the mean of its divisors is an integer number (16612707).

Almost surely, 2^66450822 is an apocalyptic number.

66450822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66450822 is a wasteful number, since it uses less digits than its factorization.

66450822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075142.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 66450822 is about 8151.7373608330. The cubic root of 66450822 is about 405.0420562941.

The spelling of 66450822 in words is "sixty-six million, four hundred fifty thousand, eight hundred twenty-two".