65301220 has 12 divisors (see below), whose sum is σ = 137132604. Its totient is φ = 26120480.

The previous prime is 65301217. The next prime is 65301239. The reversal of 65301220 is 2210356.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 54051904 = 3354^2 + 7352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632511 + ... + 1632550.

It is an arithmetic number, because the mean of its divisors is an integer number (11427717).

Almost surely, 2^65301220 is an apocalyptic number.

It is an amenable number.

65301220 is an abundant number, since it is smaller than the sum of its proper divisors (71831384).

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

65301220 is a wasteful number, since it uses less digits than its factorization.

65301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265070 (or 3265068 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 65301220 is about 8080.9170271696. The cubic root of 65301220 is about 402.6927076390.

Adding to 65301220 its reverse (2210356), we get a palindrome (67511576).

It can be divided in two parts, 6530 and 1220, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 65301220 in words is "sixty-five million, three hundred one thousand, two hundred twenty".