65213189 has 2 divisors, whose sum is σ = 65213190. Its totient is φ = 65213188.

The previous prime is 65213179. The next prime is 65213191. The reversal of 65213189 is 98131256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 940900 = 8017^2 + 970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65213189 is a prime.

Together with 65213191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65213179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32606594 + 32606595.

It is an arithmetic number, because the mean of its divisors is an integer number (32606595).

Almost surely, 2^65213189 is an apocalyptic number.

It is an amenable number.

65213189 is a deficient number, since it is larger than the sum of its proper divisors (1).

65213189 is an equidigital number, since it uses as much as digits as its factorization.

65213189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 65213189 is about 8075.4683455512. The cubic root of 65213189 is about 402.5116728222.

The spelling of 65213189 in words is "sixty-five million, two hundred thirteen thousand, one hundred eighty-nine".