987846661 has 16 divisors (see below), whose sum is σ = 1028397888. Its totient is φ = 948182400.

The previous prime is 987846649. The next prime is 987846679. The reversal of 987846661 is 166648789.

It is a happy number.

It is not a de Polignac number, because 987846661 - 2⁷ = 987846533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987846631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125955 + ... + 1126831.

It is an arithmetic number, because the mean of its divisors is an integer number (64274868).

Almost surely, 2^987846661 is an apocalyptic number.

It is an amenable number.

987846661 is a deficient number, since it is larger than the sum of its proper divisors (40551227).

987846661 is a wasteful number, since it uses less digits than its factorization.

987846661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its digits is 3483648, while the sum is 55.

The square root of 987846661 is about 31430.0280146232. The cubic root of 987846661 is about 995.9323637694.

The spelling of 987846661 in words is "nine hundred eighty-seven million, eight hundred forty-six thousand, six hundred sixty-one".