65405541 has 8 divisors (see below), whose sum is σ = 87276064. Its totient is φ = 43569360.

The previous prime is 65405539. The next prime is 65405563. The reversal of 65405541 is 14550456.

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

It is not a de Polignac number, because 65405541 - 2¹ = 65405539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65405499 and 65405508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65405521) 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, 3751 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (10909508).

Almost surely, 2^65405541 is an apocalyptic number.

It is an amenable number.

65405541 is a deficient number, since it is larger than the sum of its proper divisors (21870523).

65405541 is a wasteful number, since it uses less digits than its factorization.

65405541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17171.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 65405541 is about 8087.3692261452. The cubic root of 65405541 is about 402.9070321460.

Adding to 65405541 its reverse (14550456), we get a palindrome (79955997).

The spelling of 65405541 in words is "sixty-five million, four hundred five thousand, five hundred forty-one".