65165653 has 4 divisors (see below), whose sum is σ = 74475040. Its totient is φ = 55856268.

The previous prime is 65165651. The next prime is 65165663. The reversal of 65165653 is 35656156.

It is a happy number.

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 65165653 - 2¹ = 65165651 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 (65165651) 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, 4654683 + ... + 4654696.

It is an arithmetic number, because the mean of its divisors is an integer number (18618760).

Almost surely, 2^65165653 is an apocalyptic number.

It is an amenable number.

65165653 is a deficient number, since it is larger than the sum of its proper divisors (9309387).

65165653 is an equidigital number, since it uses as much as digits as its factorization.

65165653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9309386.

The product of its digits is 81000, while the sum is 37.

The square root of 65165653 is about 8072.5245741342. The cubic root of 65165653 is about 402.4138477956.

The spelling of 65165653 in words is "sixty-five million, one hundred sixty-five thousand, six hundred fifty-three".