66656922 has 8 divisors (see below), whose sum is σ = 133313856. Its totient is φ = 22218972.

The previous prime is 66656911. The next prime is 66656927. The reversal of 66656922 is 22965666.

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

66656922 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66656927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5554738 + ... + 5554749.

It is an arithmetic number, because the mean of its divisors is an integer number (16664232).

Almost surely, 2^66656922 is an apocalyptic number.

66656922 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.

66656922 is a wasteful number, since it uses less digits than its factorization.

66656922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109492.

The product of its digits is 233280, while the sum is 42.

The square root of 66656922 is about 8164.3690509433. The cubic root of 66656922 is about 405.4603757319.

The spelling of 66656922 in words is "sixty-six million, six hundred fifty-six thousand, nine hundred twenty-two".