987740 has 48 divisors (see below), whose sum is σ = 2328480. Its totient is φ = 349440.

The previous prime is 987739. The next prime is 987793. The reversal of 987740 is 47789.

987740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 987740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7475 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2⁹⁸⁷⁷⁴⁰ 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 987740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164240).

987740 is an abundant number, since it is smaller than the sum of its proper divisors (1340740).

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

987740 is a wasteful number, since it uses less digits than its factorization.

987740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 987740 is about 993.8510954866. The cubic root of 987740 is about 99.5896517799.

The spelling of 987740 in words is "nine hundred eighty-seven thousand, seven hundred forty".