65072222 has 4 divisors (see below), whose sum is σ = 97608336. Its totient is φ = 32536110.

The previous prime is 65072219. The next prime is 65072239. The reversal of 65072222 is 22227056.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 65072191 and 65072200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16268054 + ... + 16268057.

It is an arithmetic number, because the mean of its divisors is an integer number (24402084).

Almost surely, 2^65072222 is an apocalyptic number.

65072222 is a deficient number, since it is larger than the sum of its proper divisors (32536114).

65072222 is a wasteful number, since it uses less digits than its factorization.

65072222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32536113.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 65072222 is about 8066.7355231221. The cubic root of 65072222 is about 402.2214360499.

Adding to 65072222 its reverse (22227056), we get a palindrome (87299278).

The spelling of 65072222 in words is "sixty-five million, seventy-two thousand, two hundred twenty-two".