987545 has 8 divisors (see below), whose sum is σ = 1276296. Its totient is φ = 729216.

The previous prime is 987541. The next prime is 987559. The reversal of 987545 is 545789.

987545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 797449 = 436^2 + 893^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 987545 - 2² = 987541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 987499 and 987508.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987545.

It is not an unprimeable number, because it can be changed into a prime (987541) 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, 7532 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (159537).

2⁹⁸⁷⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

987545 is a deficient number, since it is larger than the sum of its proper divisors (288751).

987545 is a wasteful number, since it uses less digits than its factorization.

987545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211.

The product of its digits is 50400, while the sum is 38.

The square root of 987545 is about 993.7529874169. The cubic root of 987545 is about 99.5830976732.

The spelling of 987545 in words is "nine hundred eighty-seven thousand, five hundred forty-five".