987656043 has 16 divisors (see below), whose sum is σ = 1512201600. Its totient is φ = 567074880.

The previous prime is 987656039. The next prime is 987656057. The reversal of 987656043 is 340656789.

It is not a de Polignac number, because 987656043 - 2² = 987656039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 987655983 and 987656001.

It is not an unprimeable number, because it can be changed into a prime (987656083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786978 + ... + 788231.

It is an arithmetic number, because the mean of its divisors is an integer number (94512600).

Almost surely, 2^987656043 is an apocalyptic number.

987656043 is a deficient number, since it is larger than the sum of its proper divisors (524545557).

987656043 is a wasteful number, since it uses less digits than its factorization.

987656043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575242.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 987656043 is about 31426.9954497722. The cubic root of 987656043 is about 995.8683002344.

The spelling of 987656043 in words is "nine hundred eighty-seven million, six hundred fifty-six thousand, forty-three".