65840038 has 8 divisors (see below), whose sum is σ = 107738280. Its totient is φ = 29927280.

The previous prime is 65840003. The next prime is 65840039. The reversal of 65840038 is 83004856.

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

It is a junction number, because it is equal to n+sod(n) for n = 65839985 and 65840012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65840039) 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, 1496343 + ... + 1496386.

It is an arithmetic number, because the mean of its divisors is an integer number (13467285).

Almost surely, 2^65840038 is an apocalyptic number.

65840038 is a deficient number, since it is larger than the sum of its proper divisors (41898242).

65840038 is a wasteful number, since it uses less digits than its factorization.

65840038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992742.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 65840038 is about 8114.1874516183. The cubic root of 65840038 is about 403.7972506500.

The spelling of 65840038 in words is "sixty-five million, eight hundred forty thousand, thirty-eight".