987960001 has 6 divisors (see below), whose sum is σ = 1149259650. Its totient is φ = 846822816.

The previous prime is 987959983. The next prime is 987960007. The reversal of 987960001 is 100069789.

It can be written as a sum of positive squares in only one way, i.e., 584914225 + 403045776 = 24185^2 + 20076^2 .

It is not a de Polignac number, because 987960001 - 2¹⁵ = 987927233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987960007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10081176 + ... + 10081273.

It is an arithmetic number, because the mean of its divisors is an integer number (191543275).

Almost surely, 2^987960001 is an apocalyptic number.

It is an amenable number.

987960001 is a deficient number, since it is larger than the sum of its proper divisors (161299649).

987960001 is a wasteful number, since it uses less digits than its factorization.

987960001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20162463 (or 20162456 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 987960001 is about 31431.8310157076. The cubic root of 987960001 is about 995.9704515489.

The spelling of 987960001 in words is "nine hundred eighty-seven million, nine hundred sixty thousand, one".