237440065 has 4 divisors (see below), whose sum is σ = 284928084. Its totient is φ = 189952048.

The previous prime is 237440059. The next prime is 237440069. The reversal of 237440065 is 560044732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96020401 + 141419664 = 9799^2 + 11892^2 .

It is a cyclic number.

It is not a de Polignac number, because 237440065 - 2¹⁵ = 237407297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (237440069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23744002 + ... + 23744011.

It is an arithmetic number, because the mean of its divisors is an integer number (71232021).

Almost surely, 2^237440065 is an apocalyptic number.

It is an amenable number.

237440065 is a deficient number, since it is larger than the sum of its proper divisors (47488019).

237440065 is an equidigital number, since it uses as much as digits as its factorization.

237440065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47488018.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 237440065 is about 15409.0903365513. The cubic root of 237440065 is about 619.2290669354.

Adding to 237440065 its reverse (560044732), we get a palindrome (797484797).

The spelling of 237440065 in words is "two hundred thirty-seven million, four hundred forty thousand, sixty-five".