65443601 has 8 divisors (see below), whose sum is σ = 65948904. Its totient is φ = 64940800.

The previous prime is 65443589. The next prime is 65443603. The reversal of 65443601 is 10634456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31629376 + 33814225 = 5624^2 + 5815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65443601 - 2⁶ = 65443537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65443603) 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, 117215 + ... + 117771.

It is an arithmetic number, because the mean of its divisors is an integer number (8243613).

Almost surely, 2^65443601 is an apocalyptic number.

It is an amenable number.

65443601 is a deficient number, since it is larger than the sum of its proper divisors (505303).

65443601 is a wasteful number, since it uses less digits than its factorization.

65443601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65443601 is about 8089.7219358888. The cubic root of 65443601 is about 402.9851685848.

The spelling of 65443601 in words is "sixty-five million, four hundred forty-three thousand, six hundred one".