65207220 has 96 divisors (see below), whose sum is σ = 201519360. Its totient is φ = 15651840.

The previous prime is 65207171. The next prime is 65207227. The reversal of 65207220 is 2270256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65207227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30961 + ... + 32999.

It is an arithmetic number, because the mean of its divisors is an integer number (2099160).

Almost surely, 2^65207220 is an apocalyptic number.

65207220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65207220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100759680).

65207220 is an abundant number, since it is smaller than the sum of its proper divisors (136312140).

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

65207220 is a wasteful number, since it uses less digits than its factorization.

65207220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 65207220 is about 8075.0987610060. The cubic root of 65207220 is about 402.4993917407.

Adding to 65207220 its reverse (2270256), we get a palindrome (67477476).

The spelling of 65207220 in words is "sixty-five million, two hundred seven thousand, two hundred twenty".