65208340 has 12 divisors (see below), whose sum is σ = 136937556. Its totient is φ = 26083328.

The previous prime is 65208307. The next prime is 65208343. The reversal of 65208340 is 4380256.

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 57820816 = 2718^2 + 7604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65208299 and 65208308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65208343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630189 + ... + 1630228.

It is an arithmetic number, because the mean of its divisors is an integer number (11411463).

Almost surely, 2^65208340 is an apocalyptic number.

It is an amenable number.

65208340 is an abundant number, since it is smaller than the sum of its proper divisors (71729216).

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

65208340 is a wasteful number, since it uses less digits than its factorization.

65208340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260426 (or 3260424 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 65208340 is about 8075.1681097052. The cubic root of 65208340 is about 402.5016961723.

Adding to 65208340 its reverse (4380256), we get a palindrome (69588596).

The spelling of 65208340 in words is "sixty-five million, two hundred eight thousand, three hundred forty".