65445413 has 4 divisors (see below), whose sum is σ = 71395008. Its totient is φ = 59495820.

The previous prime is 65445409. The next prime is 65445421. The reversal of 65445413 is 31454456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65445413 - 2² = 65445409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65445413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65445473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2974781 + ... + 2974802.

It is an arithmetic number, because the mean of its divisors is an integer number (17848752).

Almost surely, 2^65445413 is an apocalyptic number.

It is an amenable number.

65445413 is a deficient number, since it is larger than the sum of its proper divisors (5949595).

65445413 is a wasteful number, since it uses less digits than its factorization.

65445413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5949594.

The product of its digits is 28800, while the sum is 32.

The square root of 65445413 is about 8089.8339290742. The cubic root of 65445413 is about 402.9888878299.

Adding to 65445413 its reverse (31454456), we get a palindrome (96899869).

The spelling of 65445413 in words is "sixty-five million, four hundred forty-five thousand, four hundred thirteen".