987377823 has 16 divisors (see below), whose sum is σ = 1465248000. Its totient is φ = 657142200.

The previous prime is 987377813. The next prime is 987377849. The reversal of 987377823 is 328773789.

It is not a de Polignac number, because 987377823 - 2⁵ = 987377791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 987377823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987377813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14353 + ... + 46698.

It is an arithmetic number, because the mean of its divisors is an integer number (91578000).

Almost surely, 2^987377823 is an apocalyptic number.

987377823 is a deficient number, since it is larger than the sum of its proper divisors (477870177).

987377823 is a wasteful number, since it uses less digits than its factorization.

987377823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61659 (or 61653 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 987377823 is about 31422.5686887625. The cubic root of 987377823 is about 995.7747803289.

The spelling of 987377823 in words is "nine hundred eighty-seven million, three hundred seventy-seven thousand, eight hundred twenty-three".