987876643 has 8 divisors (see below), whose sum is σ = 1070239968. Its totient is φ = 906423744.

The previous prime is 987876607. The next prime is 987876649. The reversal of 987876643 is 346678789.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987876643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987876649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225346 + ... + 229687.

It is an arithmetic number, because the mean of its divisors is an integer number (133779996).

Almost surely, 2^987876643 is an apocalyptic number.

987876643 is a deficient number, since it is larger than the sum of its proper divisors (82363325).

987876643 is a wasteful number, since it uses less digits than its factorization.

987876643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455213.

The product of its digits is 12192768, while the sum is 58.

The square root of 987876643 is about 31430.5049752625. The cubic root of 987876643 is about 995.9424394702.

The spelling of 987876643 in words is "nine hundred eighty-seven million, eight hundred seventy-six thousand, six hundred forty-three".