66622505 has 8 divisors (see below), whose sum is σ = 81302400. Its totient is φ = 52394416.

The previous prime is 66622487. The next prime is 66622511. The reversal of 66622505 is 50522666.

66622505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66622505 - 2¹⁴ = 66606121 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112625 + ... + 113214.

It is an arithmetic number, because the mean of its divisors is an integer number (10162800).

Almost surely, 2^66622505 is an apocalyptic number.

It is an amenable number.

66622505 is a deficient number, since it is larger than the sum of its proper divisors (14679895).

66622505 is a wasteful number, since it uses less digits than its factorization.

66622505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225903.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 66622505 is about 8162.2610225354. The cubic root of 66622505 is about 405.3905798689.

The spelling of 66622505 in words is "sixty-six million, six hundred twenty-two thousand, five hundred five".