987995 has 4 divisors (see below), whose sum is σ = 1185600. Its totient is φ = 790392.

The previous prime is 987991. The next prime is 987997. The reversal of 987995 is 599789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599789 = 41 ⋅14629.

It is a cyclic number.

It is not a de Polignac number, because 987995 - 2² = 987991 is a prime.

It is a super-2 number, since 2×987995² = 1952268240050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (987991) 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, 98795 + ... + 98804.

It is an arithmetic number, because the mean of its divisors is an integer number (296400).

2⁹⁸⁷⁹⁹⁵ is an apocalyptic number.

987995 is a deficient number, since it is larger than the sum of its proper divisors (197605).

987995 is a wasteful number, since it uses less digits than its factorization.

987995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197604.

The product of its digits is 204120, while the sum is 47.

The square root of 987995 is about 993.9793760436. The cubic root of 987995 is about 99.5982212335.

The spelling of 987995 in words is "nine hundred eighty-seven thousand, nine hundred ninety-five".