532643987 has 4 divisors (see below), whose sum is σ = 532717416. Its totient is φ = 532570560.

The previous prime is 532643977. The next prime is 532644019. The reversal of 532643987 is 789346235.

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 532643987 - 2⁸ = 532643731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (532643927) 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, 24473 + ... + 40794.

It is an arithmetic number, because the mean of its divisors is an integer number (133179354).

Almost surely, 2^532643987 is an apocalyptic number.

532643987 is a deficient number, since it is larger than the sum of its proper divisors (73429).

532643987 is an equidigital number, since it uses as much as digits as its factorization.

532643987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73428.

The product of its digits is 1088640, while the sum is 47.

The square root of 532643987 is about 23079.0811558866. The cubic root of 532643987 is about 810.6107201306.

The spelling of 532643987 in words is "five hundred thirty-two million, six hundred forty-three thousand, nine hundred eighty-seven".