65166222 has 32 divisors (see below), whose sum is σ = 148366080. Its totient is φ = 18888320.

The previous prime is 65166209. The next prime is 65166223. The reversal of 65166222 is 22266156.

It is a self number, because there is not a number n which added to its sum of digits gives 65166222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65166223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19947 + ... + 22982.

It is an arithmetic number, because the mean of its divisors is an integer number (4636440).

Almost surely, 2^65166222 is an apocalyptic number.

65166222 is an abundant number, since it is smaller than the sum of its proper divisors (83199858).

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

65166222 is a wasteful number, since it uses less digits than its factorization.

65166222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42968.

The product of its digits is 8640, while the sum is 30.

The square root of 65166222 is about 8072.5598170593. The cubic root of 65166222 is about 402.4150190303.

The spelling of 65166222 in words is "sixty-five million, one hundred sixty-six thousand, two hundred twenty-two".