65623222 has 32 divisors (see below), whose sum is σ = 116640000. Its totient is φ = 27107808.

The previous prime is 65623219. The next prime is 65623273. The reversal of 65623222 is 22232656.

It is a super-2 number, since 2×65623222² = 8612814531322568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43029 + ... + 44527.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^65623222 is an apocalyptic number.

65623222 is a deficient number, since it is larger than the sum of its proper divisors (51016778).

65623222 is a wasteful number, since it uses less digits than its factorization.

65623222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its digits is 8640, while the sum is 28.

The square root of 65623222 is about 8100.8161317240. The cubic root of 65623222 is about 403.3535187099.

Adding to 65623222 its reverse (22232656), we get a palindrome (87855878).

The spelling of 65623222 in words is "sixty-five million, six hundred twenty-three thousand, two hundred twenty-two".