65866541 has 16 divisors (see below), whose sum is σ = 73156608. Its totient is φ = 58915200.

The previous prime is 65866531. The next prime is 65866571. The reversal of 65866541 is 14566856.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65866541 - 2⁶ = 65866477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65866501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101480 + ... + 102126.

It is an arithmetic number, because the mean of its divisors is an integer number (4572288).

Almost surely, 2^65866541 is an apocalyptic number.

It is an amenable number.

65866541 is a deficient number, since it is larger than the sum of its proper divisors (7290067).

65866541 is a wasteful number, since it uses less digits than its factorization.

65866541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 172800, while the sum is 41.

The square root of 65866541 is about 8115.8204144744. The cubic root of 65866541 is about 403.8514243880.

The spelling of 65866541 in words is "sixty-five million, eight hundred sixty-six thousand, five hundred forty-one".