63561653 has 4 divisors (see below), whose sum is σ = 63632640. Its totient is φ = 63490668.

The previous prime is 63561637. The next prime is 63561661. The reversal of 63561653 is 35616536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63561653 - 2⁴ = 63561637 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 (63561613) 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, 34133 + ... + 35946.

It is an arithmetic number, because the mean of its divisors is an integer number (15908160).

Almost surely, 2^63561653 is an apocalyptic number.

It is an amenable number.

63561653 is a deficient number, since it is larger than the sum of its proper divisors (70987).

63561653 is an equidigital number, since it uses as much as digits as its factorization.

63561653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70986.

The product of its digits is 48600, while the sum is 35.

The square root of 63561653 is about 7972.5562400023. The cubic root of 63561653 is about 399.0846841733.

The spelling of 63561653 in words is "sixty-three million, five hundred sixty-one thousand, six hundred fifty-three".