987876677 has 4 divisors (see below), whose sum is σ = 1021941420. Its totient is φ = 953811936.

The previous prime is 987876649. The next prime is 987876689. The reversal of 987876677 is 776678789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 643180321 + 344696356 = 25361^2 + 18566^2 .

It is a cyclic number.

It is not a de Polignac number, because 987876677 - 2¹² = 987872581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987876607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17032328 + ... + 17032385.

It is an arithmetic number, because the mean of its divisors is an integer number (255485355).

Almost surely, 2^987876677 is an apocalyptic number.

It is an amenable number.

987876677 is a deficient number, since it is larger than the sum of its proper divisors (34064743).

987876677 is a wasteful number, since it uses less digits than its factorization.

987876677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34064742.

The product of its digits is 49787136, while the sum is 65.

The square root of 987876677 is about 31430.5055161383. The cubic root of 987876677 is about 995.9424508960.

The spelling of 987876677 in words is "nine hundred eighty-seven million, eight hundred seventy-six thousand, six hundred seventy-seven".