63661283 has 4 divisors (see below), whose sum is σ = 72755760. Its totient is φ = 54566808.

The previous prime is 63661261. The next prime is 63661289. The reversal of 63661283 is 38216636.

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 63661283 - 2⁶ = 63661219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63661289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4547228 + ... + 4547241.

It is an arithmetic number, because the mean of its divisors is an integer number (18188940).

Almost surely, 2^63661283 is an apocalyptic number.

63661283 is a deficient number, since it is larger than the sum of its proper divisors (9094477).

63661283 is an equidigital number, since it uses as much as digits as its factorization.

63661283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094476.

The product of its digits is 31104, while the sum is 35.

The square root of 63661283 is about 7978.8021030729. The cubic root of 63661283 is about 399.2930910185.

The spelling of 63661283 in words is "sixty-three million, six hundred sixty-one thousand, two hundred eighty-three".