65654663 has 4 divisors (see below), whose sum is σ = 69516720. Its totient is φ = 61792608.

The previous prime is 65654657. The next prime is 65654681. The reversal of 65654663 is 36645656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65654663 - 2⁶ = 65654599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65654663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65954663) 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 3 ways as a sum of consecutive naturals, for example, 1931003 + ... + 1931036.

It is an arithmetic number, because the mean of its divisors is an integer number (17379180).

Almost surely, 2^65654663 is an apocalyptic number.

65654663 is a deficient number, since it is larger than the sum of its proper divisors (3862057).

65654663 is a wasteful number, since it uses less digits than its factorization.

65654663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862056.

The product of its digits is 388800, while the sum is 41.

The square root of 65654663 is about 8102.7565062761. The cubic root of 65654663 is about 403.4179258551.

The spelling of 65654663 in words is "sixty-five million, six hundred fifty-four thousand, six hundred sixty-three".