663536143 has 4 divisors (see below), whose sum is σ = 664008480. Its totient is φ = 663063808.

The previous prime is 663536119. The next prime is 663536161. The reversal of 663536143 is 341635366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663536143 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 (663536173) 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, 234055 + ... + 236872.

It is an arithmetic number, because the mean of its divisors is an integer number (166002120).

Almost surely, 2^663536143 is an apocalyptic number.

663536143 is a deficient number, since it is larger than the sum of its proper divisors (472337).

663536143 is a wasteful number, since it uses less digits than its factorization.

663536143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472336.

The product of its digits is 116640, while the sum is 37.

The square root of 663536143 is about 25759.1953096365. The cubic root of 663536143 is about 872.2109366643.

It can be divided in two parts, 6635 and 36143, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 663536143 in words is "six hundred sixty-three million, five hundred thirty-six thousand, one hundred forty-three".