65437249 has 4 divisors (see below), whose sum is σ = 67548160. Its totient is φ = 63326340.

The previous prime is 65437247. The next prime is 65437289. The reversal of 65437249 is 94273456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65437249 - 2¹ = 65437247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65437247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055409 + ... + 1055470.

It is an arithmetic number, because the mean of its divisors is an integer number (16887040).

Almost surely, 2^65437249 is an apocalyptic number.

It is an amenable number.

65437249 is a deficient number, since it is larger than the sum of its proper divisors (2110911).

65437249 is a wasteful number, since it uses less digits than its factorization.

65437249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110910.

The product of its digits is 181440, while the sum is 40.

The square root of 65437249 is about 8089.3293294315. The cubic root of 65437249 is about 402.9721301590.

The spelling of 65437249 in words is "sixty-five million, four hundred thirty-seven thousand, two hundred forty-nine".