66822895 has 8 divisors (see below), whose sum is σ = 80357760. Its totient is φ = 53344800.

The previous prime is 66822893. The next prime is 66822901. The reversal of 66822895 is 59822866.

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

It is not a de Polignac number, because 66822895 - 2¹ = 66822893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66822893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11556 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (10044720).

Almost surely, 2^66822895 is an apocalyptic number.

66822895 is a deficient number, since it is larger than the sum of its proper divisors (13534865).

66822895 is a wasteful number, since it uses less digits than its factorization.

66822895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28385.

The product of its digits is 414720, while the sum is 46.

The square root of 66822895 is about 8174.5272034534. The cubic root of 66822895 is about 405.7966233700.

The spelling of 66822895 in words is "sixty-six million, eight hundred twenty-two thousand, eight hundred ninety-five".