65870237 has 2 divisors, whose sum is σ = 65870238. Its totient is φ = 65870236.

The previous prime is 65870221. The next prime is 65870243. The reversal of 65870237 is 73207856.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65626201 + 244036 = 8101^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 65870237 - 2⁴ = 65870221 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65870237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65870267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32935118 + 32935119.

It is an arithmetic number, because the mean of its divisors is an integer number (32935119).

Almost surely, 2^65870237 is an apocalyptic number.

It is an amenable number.

65870237 is a deficient number, since it is larger than the sum of its proper divisors (1).

65870237 is an equidigital number, since it uses as much as digits as its factorization.

65870237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 65870237 is about 8116.0481146923. The cubic root of 65870237 is about 403.8589780813.

The spelling of 65870237 in words is "sixty-five million, eight hundred seventy thousand, two hundred thirty-seven".