65430020 has 12 divisors (see below), whose sum is σ = 137403084. Its totient is φ = 26172000.

The previous prime is 65430017. The next prime is 65430067. The reversal of 65430020 is 2003456.

It can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 37063744 = 5326^2 + 6088^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3271501 = 65430020 / (6 + 5 + 4 + 3 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 65429974 and 65430001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635731 + ... + 1635770.

It is an arithmetic number, because the mean of its divisors is an integer number (11450257).

Almost surely, 2^65430020 is an apocalyptic number.

It is an amenable number.

65430020 is an abundant number, since it is smaller than the sum of its proper divisors (71973064).

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

65430020 is a wasteful number, since it uses less digits than its factorization.

65430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271510 (or 3271508 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 65430020 is about 8088.8824938925. The cubic root of 65430020 is about 402.9572905335.

Adding to 65430020 its reverse (2003456), we get a palindrome (67433476).

The spelling of 65430020 in words is "sixty-five million, four hundred thirty thousand, twenty".