65663005 has 8 divisors (see below), whose sum is σ = 78852312. Its totient is φ = 52492608.

The previous prime is 65662997. The next prime is 65663033. The reversal of 65663005 is 50036656.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11758041 + 53904964 = 3429^2 + 7342^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 65663005 - 2³ = 65662997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4587 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (9856539).

Almost surely, 2^65663005 is an apocalyptic number.

It is an amenable number.

65663005 is a deficient number, since it is larger than the sum of its proper divisors (13189307).

65663005 is a wasteful number, since it uses less digits than its factorization.

65663005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 65663005 is about 8103.2712530187. The cubic root of 65663005 is about 403.4350110585.

The spelling of 65663005 in words is "sixty-five million, six hundred sixty-three thousand, five".