65222729 has 16 divisors (see below), whose sum is σ = 79102464. Its totient is φ = 52963200.

The previous prime is 65222683. The next prime is 65222737. The reversal of 65222729 is 92722256.

65222729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65222729 - 2⁸ = 65222473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65222329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2924 + ... + 11789.

It is an arithmetic number, because the mean of its divisors is an integer number (4943904).

Almost surely, 2^65222729 is an apocalyptic number.

It is an amenable number.

65222729 is a deficient number, since it is larger than the sum of its proper divisors (13879735).

65222729 is a wasteful number, since it uses less digits than its factorization.

65222729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14768.

The product of its digits is 30240, while the sum is 35.

The square root of 65222729 is about 8076.0590017657. The cubic root of 65222729 is about 402.5312995991.

It can be divided in two parts, 652227 and 29, that added together give a palindrome (652256).

The spelling of 65222729 in words is "sixty-five million, two hundred twenty-two thousand, seven hundred twenty-nine".