987730 has 8 divisors (see below), whose sum is σ = 1777932. Its totient is φ = 395088.

The previous prime is 987713. The next prime is 987739. The reversal of 987730 is 37789.

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 1681 = 993^2 + 41^2 .

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

It is a super-2 number, since 2×987730² = 1951221105800, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (987739) by changing a digit.

987730 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49377 + ... + 49396.

2⁹⁸⁷⁷³⁰ is an apocalyptic number.

987730 is a deficient number, since it is larger than the sum of its proper divisors (790202).

987730 is a wasteful number, since it uses less digits than its factorization.

987730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98780.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 987730 is about 993.8460645392. The cubic root of 987730 is about 99.5893156929.

The spelling of 987730 in words is "nine hundred eighty-seven thousand, seven hundred thirty".