65983213 has 2 divisors, whose sum is σ = 65983214. Its totient is φ = 65983212.

The previous prime is 65983201. The next prime is 65983223. The reversal of 65983213 is 31238956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64352484 + 1630729 = 8022^2 + 1277^2 .

It is a cyclic number.

It is not a de Polignac number, because 65983213 - 2⁹ = 65982701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65983223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32991606 + 32991607.

It is an arithmetic number, because the mean of its divisors is an integer number (32991607).

Almost surely, 2^65983213 is an apocalyptic number.

It is an amenable number.

65983213 is a deficient number, since it is larger than the sum of its proper divisors (1).

65983213 is an equidigital number, since it uses as much as digits as its factorization.

65983213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 65983213 is about 8123.0051705019. The cubic root of 65983213 is about 404.0897363810.

The spelling of 65983213 in words is "sixty-five million, nine hundred eighty-three thousand, two hundred thirteen".