65265220 has 24 divisors (see below), whose sum is σ = 137971008. Its totient is φ = 25932000.

The previous prime is 65265217. The next prime is 65265241. The reversal of 65265220 is 2256256.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786 + ... + 13825.

It is an arithmetic number, because the mean of its divisors is an integer number (5748792).

Almost surely, 2^65265220 is an apocalyptic number.

It is an amenable number.

65265220 is an abundant number, since it is smaller than the sum of its proper divisors (72705788).

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

65265220 is a wasteful number, since it uses less digits than its factorization.

65265220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21771 (or 21769 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65265220 is about 8078.6892501197. The cubic root of 65265220 is about 402.6186936961.

The spelling of 65265220 in words is "sixty-five million, two hundred sixty-five thousand, two hundred twenty".