65645230 has 16 divisors (see below), whose sum is σ = 135041760. Its totient is φ = 22506912.

The previous prime is 65645213. The next prime is 65645231. The reversal of 65645230 is 3254656.

It is a junction number, because it is equal to n+sod(n) for n = 65645192 and 65645201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65645231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468825 + ... + 468964.

It is an arithmetic number, because the mean of its divisors is an integer number (8440110).

Almost surely, 2^65645230 is an apocalyptic number.

65645230 is an abundant number, since it is smaller than the sum of its proper divisors (69396530).

65645230 is a wasteful number, since it uses less digits than its factorization.

65645230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937803.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 65645230 is about 8102.1743995054. The cubic root of 65645230 is about 403.3986044372.

Adding to 65645230 its reverse (3254656), we get a palindrome (68899886).

The spelling of 65645230 in words is "sixty-five million, six hundred forty-five thousand, two hundred thirty".