987371563 has 4 divisors (see below), whose sum is σ = 1002108520. Its totient is φ = 972634608.

The previous prime is 987371521. The next prime is 987371573. The reversal of 987371563 is 365173789.

987371563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 987371563 - 2¹³ = 987363371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987371573) 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, 7368378 + ... + 7368511.

It is an arithmetic number, because the mean of its divisors is an integer number (250527130).

Almost surely, 2^987371563 is an apocalyptic number.

987371563 is a deficient number, since it is larger than the sum of its proper divisors (14736957).

987371563 is a wasteful number, since it uses less digits than its factorization.

987371563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14736956.

The product of its digits is 952560, while the sum is 49.

The square root of 987371563 is about 31422.4690786704. The cubic root of 987371563 is about 995.7726759122.

The spelling of 987371563 in words is "nine hundred eighty-seven million, three hundred seventy-one thousand, five hundred sixty-three".