987907 has 4 divisors (see below), whose sum is σ = 995256. Its totient is φ = 980560.

The previous prime is 987869. The next prime is 987911. The reversal of 987907 is 709789.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 987907 - 2¹⁵ = 955139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987907.

It is not an unprimeable number, because it can be changed into a prime (987997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3469 + ... + 3742.

It is an arithmetic number, because the mean of its divisors is an integer number (248814).

2⁹⁸⁷⁹⁰⁷ is an apocalyptic number.

987907 is a deficient number, since it is larger than the sum of its proper divisors (7349).

987907 is a wasteful number, since it uses less digits than its factorization.

987907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 987907 is about 993.9351085458. The cubic root of 987907 is about 99.5952640985.

The spelling of 987907 in words is "nine hundred eighty-seven thousand, nine hundred seven".