65381493 has 8 divisors (see below), whose sum is σ = 87309856. Its totient is φ = 43520400.

The previous prime is 65381471. The next prime is 65381497. The reversal of 65381493 is 39418356.

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

It is not a de Polignac number, because 65381493 - 2²¹ = 63284341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65381497) 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, 14503 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (10913732).

Almost surely, 2^65381493 is an apocalyptic number.

It is an amenable number.

65381493 is a deficient number, since it is larger than the sum of its proper divisors (21928363).

65381493 is a wasteful number, since it uses less digits than its factorization.

65381493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33635.

The product of its digits is 77760, while the sum is 39.

The square root of 65381493 is about 8085.8823266234. The cubic root of 65381493 is about 402.8576464421.

The spelling of 65381493 in words is "sixty-five million, three hundred eighty-one thousand, four hundred ninety-three".