7216863 has 4 divisors (see below), whose sum is σ = 9622488. Its totient is φ = 4811240.

The previous prime is 7216837. The next prime is 7216879. The reversal of 7216863 is 3686127.

7216863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7216863 - 2⁶ = 7216799 is a prime.

It is a super-2 number, since 2×7216863² = 104166223121538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216063) 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, 1202808 + ... + 1202813.

It is an arithmetic number, because the mean of its divisors is an integer number (2405622).

Almost surely, 2^7216863 is an apocalyptic number.

7216863 is a deficient number, since it is larger than the sum of its proper divisors (2405625).

7216863 is a wasteful number, since it uses less digits than its factorization.

7216863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405624.

The product of its digits is 12096, while the sum is 33.

The square root of 7216863 is about 2686.4219698327. The cubic root of 7216863 is about 193.2485098237.

The spelling of 7216863 in words is "seven million, two hundred sixteen thousand, eight hundred sixty-three".