66315822 has 8 divisors (see below), whose sum is σ = 132631656. Its totient is φ = 22105272.

The previous prime is 66315797. The next prime is 66315841. The reversal of 66315822 is 22851366.

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

66315822 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5526313 + ... + 5526324.

It is an arithmetic number, because the mean of its divisors is an integer number (16578957).

Almost surely, 2^66315822 is an apocalyptic number.

66315822 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.

66315822 is a wasteful number, since it uses less digits than its factorization.

66315822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052642.

The product of its digits is 17280, while the sum is 33.

The square root of 66315822 is about 8143.4527075436. The cubic root of 66315822 is about 404.7675788828.

The spelling of 66315822 in words is "sixty-six million, three hundred fifteen thousand, eight hundred twenty-two".