7216879 has 2 divisors, whose sum is σ = 7216880. Its totient is φ = 7216878.

The previous prime is 7216837. The next prime is 7216889. The reversal of 7216879 is 9786127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7216879 - 2⁹ = 7216367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7216889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608439 + 3608440.

It is an arithmetic number, because the mean of its divisors is an integer number (3608440).

Almost surely, 2^7216879 is an apocalyptic number.

7216879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216879 is an equidigital number, since it uses as much as digits as its factorization.

7216879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 7216879 is about 2686.4249477698. The cubic root of 7216879 is about 193.2486526362.

It can be divided in two parts, 7 and 216879, that multiplied together give a triangular number (1518153 = T₁₇₄₂).

The spelling of 7216879 in words is "seven million, two hundred sixteen thousand, eight hundred seventy-nine".