65168213 has 4 divisors (see below), whose sum is σ = 71092608. Its totient is φ = 59243820.

The previous prime is 65168171. The next prime is 65168219. The reversal of 65168213 is 31286156.

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 65168213 - 2⁶ = 65168149 is a prime.

It is a super-2 number, since 2×65168213² = 8493791971226738, which contains 22 as substring.

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 65168213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65168219) 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, 2962181 + ... + 2962202.

It is an arithmetic number, because the mean of its divisors is an integer number (17773152).

Almost surely, 2^65168213 is an apocalyptic number.

It is an amenable number.

65168213 is a deficient number, since it is larger than the sum of its proper divisors (5924395).

65168213 is a wasteful number, since it uses less digits than its factorization.

65168213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5924394.

The product of its digits is 8640, while the sum is 32.

The square root of 65168213 is about 8072.6831351168. The cubic root of 65168213 is about 402.4191172687.

The spelling of 65168213 in words is "sixty-five million, one hundred sixty-eight thousand, two hundred thirteen".