65405141 has 4 divisors (see below), whose sum is σ = 66016512. Its totient is φ = 64793772.

The previous prime is 65405117. The next prime is 65405143. The reversal of 65405141 is 14150456.

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 a de Polignac number, because none of the positive numbers 2^k-65405141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65405141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65405143) 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, 305525 + ... + 305738.

It is an arithmetic number, because the mean of its divisors is an integer number (16504128).

Almost surely, 2^65405141 is an apocalyptic number.

It is an amenable number.

65405141 is a deficient number, since it is larger than the sum of its proper divisors (611371).

65405141 is a wasteful number, since it uses less digits than its factorization.

65405141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611370.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 65405141 is about 8087.3444961866. The cubic root of 65405141 is about 402.9062107928.

Adding to 65405141 its reverse (14150456), we get a palindrome (79555597).

The spelling of 65405141 in words is "sixty-five million, four hundred five thousand, one hundred forty-one".