65657222 has 16 divisors (see below), whose sum is σ = 100649472. Its totient is φ = 32114880.

The previous prime is 65657209. The next prime is 65657237. The reversal of 65657222 is 22275656.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16772 + ... + 20312.

It is an arithmetic number, because the mean of its divisors is an integer number (6290592).

Almost surely, 2^65657222 is an apocalyptic number.

65657222 is a deficient number, since it is larger than the sum of its proper divisors (34992250).

65657222 is a wasteful number, since it uses less digits than its factorization.

65657222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743.

The product of its digits is 50400, while the sum is 35.

The square root of 65657222 is about 8102.9144139624. The cubic root of 65657222 is about 403.4231670826.

The spelling of 65657222 in words is "sixty-five million, six hundred fifty-seven thousand, two hundred twenty-two".