65947213 has 2 divisors, whose sum is σ = 65947214. Its totient is φ = 65947212.

The previous prime is 65947201. The next prime is 65947241. The reversal of 65947213 is 31274956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60871204 + 5076009 = 7802^2 + 2253^2 .

It is a cyclic number.

It is not a de Polignac number, because 65947213 - 2¹⁷ = 65816141 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32973606 + 32973607.

It is an arithmetic number, because the mean of its divisors is an integer number (32973607).

Almost surely, 2^65947213 is an apocalyptic number.

It is an amenable number.

65947213 is a deficient number, since it is larger than the sum of its proper divisors (1).

65947213 is an equidigital number, since it uses as much as digits as its factorization.

65947213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 65947213 is about 8120.7889395058. The cubic root of 65947213 is about 404.0162334587.

The spelling of 65947213 in words is "sixty-five million, nine hundred forty-seven thousand, two hundred thirteen".