66023922 has 16 divisors (see below), whose sum is σ = 133283232. Its totient is φ = 21802080.

The previous prime is 66023921. The next prime is 66023929. The reversal of 66023922 is 22932066.

It is a self number, because there is not a number n which added to its sum of digits gives 66023922.

It is not an unprimeable number, because it can be changed into a prime (66023921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50779 + ... + 52062.

It is an arithmetic number, because the mean of its divisors is an integer number (8330202).

Almost surely, 2^66023922 is an apocalyptic number.

66023922 is an abundant number, since it is smaller than the sum of its proper divisors (67259310).

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

66023922 is a wasteful number, since it uses less digits than its factorization.

66023922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102953.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 66023922 is about 8125.5105685735. The cubic root of 66023922 is about 404.1728216916.

Adding to 66023922 its reverse (22932066), we get a palindrome (88955988).

The spelling of 66023922 in words is "sixty-six million, twenty-three thousand, nine hundred twenty-two".