65371213 has 2 divisors, whose sum is σ = 65371214. Its totient is φ = 65371212.

The previous prime is 65371181. The next prime is 65371231. The reversal of 65371213 is 31217356.

Together with next prime (65371231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55398249 + 9972964 = 7443^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 65371213 - 2⁵ = 65371181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65371253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32685606 + 32685607.

It is an arithmetic number, because the mean of its divisors is an integer number (32685607).

Almost surely, 2^65371213 is an apocalyptic number.

It is an amenable number.

65371213 is a deficient number, since it is larger than the sum of its proper divisors (1).

65371213 is an equidigital number, since it uses as much as digits as its factorization.

65371213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 65371213 is about 8085.2466257994. The cubic root of 65371213 is about 402.8365314268.

Adding to 65371213 its reverse (31217356), we get a palindrome (96588569).

It can be divided in two parts, 6537 and 1213, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 65371213 in words is "sixty-five million, three hundred seventy-one thousand, two hundred thirteen".