65169493 has 4 divisors (see below), whose sum is σ = 66142240. Its totient is φ = 64196748.

The previous prime is 65169491. The next prime is 65169497. The reversal of 65169493 is 39496156.

65169493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65169493 - 2¹ = 65169491 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 (65169491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486273 + ... + 486406.

It is an arithmetic number, because the mean of its divisors is an integer number (16535560).

Almost surely, 2^65169493 is an apocalyptic number.

It is an amenable number.

65169493 is a deficient number, since it is larger than the sum of its proper divisors (972747).

65169493 is an equidigital number, since it uses as much as digits as its factorization.

65169493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972746.

The product of its digits is 174960, while the sum is 43.

The square root of 65169493 is about 8072.7624144403. The cubic root of 65169493 is about 402.4217519535.

The spelling of 65169493 in words is "sixty-five million, one hundred sixty-nine thousand, four hundred ninety-three".