84816213 has 16 divisors (see below), whose sum is σ = 123871680. Its totient is φ = 51382016.

The previous prime is 84816187. The next prime is 84816223. The reversal of 84816213 is 31261848.

It is a cyclic number.

It is not a de Polignac number, because 84816213 - 2⁹ = 84815701 is a prime.

It is a super-2 number, since 2×84816213² = 14387579975322738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84816223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27195 + ... + 30152.

It is an arithmetic number, because the mean of its divisors is an integer number (7741980).

Almost surely, 2^84816213 is an apocalyptic number.

It is an amenable number.

84816213 is a deficient number, since it is larger than the sum of its proper divisors (39055467).

84816213 is a wasteful number, since it uses less digits than its factorization.

84816213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57396.

The product of its digits is 9216, while the sum is 33.

The square root of 84816213 is about 9209.5718141508. The cubic root of 84816213 is about 439.3658443743.

The spelling of 84816213 in words is "eighty-four million, eight hundred sixteen thousand, two hundred thirteen".