65663801 has 8 divisors (see below), whose sum is σ = 77632320. Its totient is φ = 54342288.

The previous prime is 65663783. The next prime is 65663813. The reversal of 65663801 is 10836656.

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

It is not a de Polignac number, because 65663801 - 2⁶ = 65663737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65663821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161531 + ... + 161936.

It is an arithmetic number, because the mean of its divisors is an integer number (9704040).

Almost surely, 2^65663801 is an apocalyptic number.

It is an amenable number.

65663801 is a deficient number, since it is larger than the sum of its proper divisors (11968519).

65663801 is a wasteful number, since it uses less digits than its factorization.

65663801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323503.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 65663801 is about 8103.3203688365. The cubic root of 65663801 is about 403.4366412661.

The spelling of 65663801 in words is "sixty-five million, six hundred sixty-three thousand, eight hundred one".