65663000 has 64 divisors (see below), whose sum is σ = 165503520. Its totient is φ = 24240000.

The previous prime is 65662997. The next prime is 65663033. The reversal of 65663000 is 36656.

65663000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10475 + ... + 15525.

Almost surely, 2^65663000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65663000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82751760).

65663000 is an abundant number, since it is smaller than the sum of its proper divisors (99840520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65663000 is a wasteful number, since it uses less digits than its factorization.

65663000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085 (or 5071 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 65663000 is about 8103.2709445014. The cubic root of 65663000 is about 403.4350008185.

Adding to 65663000 its reverse (36656), we get a palindrome (65699656).

The spelling of 65663000 in words is "sixty-five million, six hundred sixty-three thousand".