65656213 has 8 divisors (see below), whose sum is σ = 75217280. Its totient is φ = 56140560.

The previous prime is 65656207. The next prime is 65656219. The reversal of 65656213 is 31265656.

It is an interprime number because it is at equal distance from previous prime (65656207) and next prime (65656219).

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

It is not a de Polignac number, because 65656213 - 2²⁵ = 32101781 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 (65656219) 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, 8193 + ... + 14086.

It is an arithmetic number, because the mean of its divisors is an integer number (9402160).

Almost surely, 2^65656213 is an apocalyptic number.

It is an amenable number.

65656213 is a deficient number, since it is larger than the sum of its proper divisors (9561067).

65656213 is a wasteful number, since it uses less digits than its factorization.

65656213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22707.

The product of its digits is 32400, while the sum is 34.

The square root of 65656213 is about 8102.8521521746. The cubic root of 65656213 is about 403.4211005109.

The spelling of 65656213 in words is "sixty-five million, six hundred fifty-six thousand, two hundred thirteen".