65896399 has 4 divisors (see below), whose sum is σ = 65967664. Its totient is φ = 65825136.

The previous prime is 65896373. The next prime is 65896417. The reversal of 65896399 is 99369856.

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

It is a cyclic number.

It is not a de Polignac number, because 65896399 - 2⁹ = 65895887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65896319) 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, 34227 + ... + 36100.

It is an arithmetic number, because the mean of its divisors is an integer number (16491916).

Almost surely, 2^65896399 is an apocalyptic number.

65896399 is a deficient number, since it is larger than the sum of its proper divisors (71265).

65896399 is an equidigital number, since it uses as much as digits as its factorization.

65896399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71264.

The product of its digits is 3149280, while the sum is 55.

The square root of 65896399 is about 8117.6596996918. The cubic root of 65896399 is about 403.9124385441.

The spelling of 65896399 in words is "sixty-five million, eight hundred ninety-six thousand, three hundred ninety-nine".