65538983 has 16 divisors (see below), whose sum is σ = 69866496. Its totient is φ = 61353600.

The previous prime is 65538973. The next prime is 65538989. The reversal of 65538983 is 38983556.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65538983 - 2⁶ = 65538919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65538989) 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, 392366 + ... + 392532.

It is an arithmetic number, because the mean of its divisors is an integer number (4366656).

Almost surely, 2^65538983 is an apocalyptic number.

65538983 is a deficient number, since it is larger than the sum of its proper divisors (4327513).

65538983 is a wasteful number, since it uses less digits than its factorization.

65538983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454.

The product of its digits is 777600, while the sum is 47.

The square root of 65538983 is about 8095.6150476662. The cubic root of 65538983 is about 403.1808529707.

The spelling of 65538983 in words is "sixty-five million, five hundred thirty-eight thousand, nine hundred eighty-three".