65610663 has 8 divisors (see below), whose sum is σ = 90302976. Its totient is φ = 42329400.

The previous prime is 65610631. The next prime is 65610683. The reversal of 65610663 is 36601656.

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

It is not a de Polignac number, because 65610663 - 2⁵ = 65610631 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65610683) 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, 352653 + ... + 352838.

It is an arithmetic number, because the mean of its divisors is an integer number (11287872).

Almost surely, 2^65610663 is an apocalyptic number.

65610663 is a deficient number, since it is larger than the sum of its proper divisors (24692313).

65610663 is a wasteful number, since it uses less digits than its factorization.

65610663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705525.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 65610663 is about 8100.0409258225. The cubic root of 65610663 is about 403.3277857459.

The spelling of 65610663 in words is "sixty-five million, six hundred ten thousand, six hundred sixty-three".