66063653 has 8 divisors (see below), whose sum is σ = 68705280. Its totient is φ = 63446320.

The previous prime is 66063631. The next prime is 66063661. The reversal of 66063653 is 35636066.

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 66063653 - 2⁸ = 66063397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66063253) 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, 425 + ... + 11502.

It is an arithmetic number, because the mean of its divisors is an integer number (8588160).

Almost surely, 2^66063653 is an apocalyptic number.

It is an amenable number.

66063653 is a deficient number, since it is larger than the sum of its proper divisors (2641627).

66063653 is a wasteful number, since it uses less digits than its factorization.

66063653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147.

The product of its (nonzero) digits is 58320, while the sum is 35.

The square root of 66063653 is about 8127.9550318638. The cubic root of 66063653 is about 404.2538780212.

The spelling of 66063653 in words is "sixty-six million, sixty-three thousand, six hundred fifty-three".