7886213 has 2 divisors, whose sum is σ = 7886214. Its totient is φ = 7886212.

The previous prime is 7886191. The next prime is 7886233. The reversal of 7886213 is 3126887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7739524 + 146689 = 2782^2 + 383^2 .

It is a cyclic number.

It is not a de Polignac number, because 7886213 - 2¹⁶ = 7820677 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7886233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3943106 + 3943107.

It is an arithmetic number, because the mean of its divisors is an integer number (3943107).

Almost surely, 2^7886213 is an apocalyptic number.

It is an amenable number.

7886213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7886213 is an equidigital number, since it uses as much as digits as its factorization.

7886213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 7886213 is about 2808.2401962795. The cubic root of 7886213 is about 199.0472434823.

The spelling of 7886213 in words is "seven million, eight hundred eighty-six thousand, two hundred thirteen".