987472647 has 32 divisors (see below), whose sum is σ = 1706048000. Its totient is φ = 564264792.

The previous prime is 987472609. The next prime is 987472699. The reversal of 987472647 is 746274789.

It is not a de Polignac number, because 987472647 - 2¹⁰ = 987471623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 987472593 and 987472602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987470647) 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 31 ways as a sum of consecutive naturals, for example, 44053 + ... + 62574.

It is an arithmetic number, because the mean of its divisors is an integer number (53314000).

Almost surely, 2^987472647 is an apocalyptic number.

987472647 is a deficient number, since it is larger than the sum of its proper divisors (718575353).

987472647 is a wasteful number, since it uses less digits than its factorization.

987472647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106657 (or 106637 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 987472647 is about 31424.0775043596. The cubic root of 987472647 is about 995.8066561125.

The spelling of 987472647 in words is "nine hundred eighty-seven million, four hundred seventy-two thousand, six hundred forty-seven".