65305237 has 2 divisors, whose sum is σ = 65305238. Its totient is φ = 65305236.

The previous prime is 65305199. The next prime is 65305241. The reversal of 65305237 is 73250356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 11737476 = 7319^2 + 3426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65305237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65305199 and 65305208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65305277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32652618 + 32652619.

It is an arithmetic number, because the mean of its divisors is an integer number (32652619).

Almost surely, 2^65305237 is an apocalyptic number.

It is an amenable number.

65305237 is a deficient number, since it is larger than the sum of its proper divisors (1).

65305237 is an equidigital number, since it uses as much as digits as its factorization.

65305237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 65305237 is about 8081.1655718714. The cubic root of 65305237 is about 402.7009646744.

The spelling of 65305237 in words is "sixty-five million, three hundred five thousand, two hundred thirty-seven".