65338999 has 16 divisors (see below), whose sum is σ = 72493056. Its totient is φ = 58398400.

The previous prime is 65338993. The next prime is 65339017. The reversal of 65338999 is 99983356.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65338999 - 2²¹ = 63241847 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 (65338993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287724 + ... + 287950.

It is an arithmetic number, because the mean of its divisors is an integer number (4530816).

Almost surely, 2^65338999 is an apocalyptic number.

65338999 is a deficient number, since it is larger than the sum of its proper divisors (7154057).

65338999 is a wasteful number, since it uses less digits than its factorization.

65338999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its digits is 1574640, while the sum is 52.

The square root of 65338999 is about 8083.2542332900. The cubic root of 65338999 is about 402.7703498583.

The spelling of 65338999 in words is "sixty-five million, three hundred thirty-eight thousand, nine hundred ninety-nine".