987745 has 8 divisors (see below), whose sum is σ = 1293120. Its totient is φ = 718320.

The previous prime is 987739. The next prime is 987793. The reversal of 987745 is 547789.

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

It is not a de Polignac number, because 987745 - 2⁵ = 987713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 987698 and 987707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8925 + ... + 9034.

It is an arithmetic number, because the mean of its divisors is an integer number (161640).

2⁹⁸⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

987745 is a deficient number, since it is larger than the sum of its proper divisors (305375).

987745 is a wasteful number, since it uses less digits than its factorization.

987745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975.

The product of its digits is 70560, while the sum is 40.

The square root of 987745 is about 993.8536109508. The cubic root of 987745 is about 99.5898198226.

The spelling of 987745 in words is "nine hundred eighty-seven thousand, seven hundred forty-five".