8787213 has 12 divisors (see below), whose sum is σ = 12718368. Its totient is φ = 5846280.

The previous prime is 8787211. The next prime is 8787217. The reversal of 8787213 is 3127878.

It is not a de Polignac number, because 8787213 - 2¹ = 8787211 is a prime.

It is a super-2 number, since 2×8787213² = 154430224614738, which contains 22 as substring.

8787213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8787211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8008 + ... + 9038.

It is an arithmetic number, because the mean of its divisors is an integer number (1059864).

Almost surely, 2^8787213 is an apocalyptic number.

It is an amenable number.

8787213 is a deficient number, since it is larger than the sum of its proper divisors (3931155).

8787213 is a wasteful number, since it uses less digits than its factorization.

8787213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984 (or 1981 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 8787213 is about 2964.3233629279. The cubic root of 8787213 is about 206.3559763914.

The spelling of 8787213 in words is "eight million, seven hundred eighty-seven thousand, two hundred thirteen".