987579136 has 72 divisors (see below), whose sum is σ = 2074774464. Its totient is φ = 468541440.

The previous prime is 987579133. The next prime is 987579139. The reversal of 987579136 is 631975789.

It is an interprime number because it is at equal distance from previous prime (987579133) and next prime (987579139).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987579133) 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 7 ways as a sum of consecutive naturals, for example, 387081 + ... + 389623.

It is an arithmetic number, because the mean of its divisors is an integer number (28816312).

Almost surely, 2^987579136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987579136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037387232).

987579136 is an abundant number, since it is smaller than the sum of its proper divisors (1087195328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

987579136 is a wasteful number, since it uses less digits than its factorization.

987579136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637 (or 2623 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 55.

The square root of 987579136 is about 31425.7718441409. The cubic root of 987579136 is about 995.8424507389.

It can be divided in two parts, 987579 and 136, that added together give a triangular number (987715 = T₁₄₀₅).

The spelling of 987579136 in words is "nine hundred eighty-seven million, five hundred seventy-nine thousand, one hundred thirty-six".