987213 has 8 divisors (see below), whose sum is σ = 1328800. Its totient is φ = 651888.

The previous prime is 987211. The next prime is 987227. The reversal of 987213 is 312789.

It is a happy number.

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

It is not a de Polignac number, because 987213 - 2¹ = 987211 is a prime.

It is a Duffinian number.

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 987213.

It is not an unprimeable number, because it can be changed into a prime (987211) 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, 1183 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (166100).

2⁹⁸⁷²¹³ is an apocalyptic number.

It is an amenable number.

987213 is a deficient number, since it is larger than the sum of its proper divisors (341587).

987213 is a wasteful number, since it uses less digits than its factorization.

987213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131.

The product of its digits is 3024, while the sum is 30.

The square root of 987213 is about 993.5859298521. The cubic root of 987213 is about 99.5719369011.

The spelling of 987213 in words is "nine hundred eighty-seven thousand, two hundred thirteen".