65444430 has 32 divisors (see below), whose sum is σ = 163897344. Its totient is φ = 16692896.

The previous prime is 65444419. The next prime is 65444437. The reversal of 65444430 is 3444456.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65444437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46734 + ... + 48113.

It is an arithmetic number, because the mean of its divisors is an integer number (5121792).

Almost surely, 2^65444430 is an apocalyptic number.

65444430 is an abundant number, since it is smaller than the sum of its proper divisors (98452914).

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

65444430 is a wasteful number, since it uses less digits than its factorization.

65444430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94880.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 65444430 is about 8089.7731735816. The cubic root of 65444430 is about 402.9868701685.

Adding to 65444430 its reverse (3444456), we get a palindrome (68888886).

The spelling of 65444430 in words is "sixty-five million, four hundred forty-four thousand, four hundred thirty".