65503413 has 6 divisors (see below), whose sum is σ = 94616054. Its totient is φ = 43668936.

The previous prime is 65503409. The next prime is 65503423. The reversal of 65503413 is 31430556.

65503413 is a `hidden beast` number, since 655 + 0 + 3 + 4 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43007364 + 22496049 = 6558^2 + 4743^2 .

It is not a de Polignac number, because 65503413 - 2² = 65503409 is a prime.

It is a super-2 number, since 2×65503413² = 8581394229297138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65503423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3639070 + ... + 3639087.

Almost surely, 2^65503413 is an apocalyptic number.

It is an amenable number.

65503413 is a deficient number, since it is larger than the sum of its proper divisors (29112641).

65503413 is a wasteful number, since it uses less digits than its factorization.

65503413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278163 (or 7278160 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 65503413 is about 8093.4178812168. The cubic root of 65503413 is about 403.1079002662.

Adding to 65503413 its reverse (31430556), we get a palindrome (96933969).

The spelling of 65503413 in words is "sixty-five million, five hundred three thousand, four hundred thirteen".