65185493 has 4 divisors (see below), whose sum is σ = 65585568. Its totient is φ = 64785420.

The previous prime is 65185489. The next prime is 65185511. The reversal of 65185493 is 39458156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65185493 - 2² = 65185489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65185493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65185403) 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, 199793 + ... + 200118.

It is an arithmetic number, because the mean of its divisors is an integer number (16396392).

Almost surely, 2^65185493 is an apocalyptic number.

It is an amenable number.

65185493 is a deficient number, since it is larger than the sum of its proper divisors (400075).

65185493 is a wasteful number, since it uses less digits than its factorization.

65185493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400074.

The product of its digits is 129600, while the sum is 41.

The square root of 65185493 is about 8073.7533402997. The cubic root of 65185493 is about 402.4546826029.

The spelling of 65185493 in words is "sixty-five million, one hundred eighty-five thousand, four hundred ninety-three".