987530247 has 18 divisors (see below), whose sum is σ = 1567898696. Its totient is φ = 598502520.

The previous prime is 987530237. The next prime is 987530261. The reversal of 987530247 is 742035789.

987530247 is a `hidden beast` number, since 98 + 7 + 530 + 24 + 7 = 666.

It is not a de Polignac number, because 987530247 - 2⁶ = 987530183 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 (987530237) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 452323 + ... + 454500.

Almost surely, 2^987530247 is an apocalyptic number.

987530247 is a deficient number, since it is larger than the sum of its proper divisors (580368449).

987530247 is a wasteful number, since it uses less digits than its factorization.

987530247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906851 (or 906837 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 987530247 is about 31424.9939856796. The cubic root of 987530247 is about 995.8260177790.

The spelling of 987530247 in words is "nine hundred eighty-seven million, five hundred thirty thousand, two hundred forty-seven".