65868447 has 8 divisors (see below), whose sum is σ = 88149760. Its totient is φ = 43749720.

The previous prime is 65868431. The next prime is 65868457. The reversal of 65868447 is 74486856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65868447 - 2⁴ = 65868431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65868396 and 65868405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65868457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39697 + ... + 41322.

It is an arithmetic number, because the mean of its divisors is an integer number (11018720).

Almost surely, 2^65868447 is an apocalyptic number.

65868447 is a deficient number, since it is larger than the sum of its proper divisors (22281313).

65868447 is a wasteful number, since it uses less digits than its factorization.

65868447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81293.

The product of its digits is 1290240, while the sum is 48.

The square root of 65868447 is about 8115.9378385988. The cubic root of 65868447 is about 403.8553198073.

The spelling of 65868447 in words is "sixty-five million, eight hundred sixty-eight thousand, four hundred forty-seven".