7287183217 has 2 divisors, whose sum is σ = 7287183218. Its totient is φ = 7287183216.

The previous prime is 7287183179. The next prime is 7287183227. The reversal of 7287183217 is 7123817827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6869757456 + 417425761 = 82884^2 + 20431^2 .

It is a cyclic number.

It is not a de Polignac number, because 7287183217 - 2²³ = 7278794609 is a prime.

It is not a weakly prime, because it can be changed into another prime (7287183227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643591608 + 3643591609.

It is an arithmetic number, because the mean of its divisors is an integer number (3643591609).

Almost surely, 2^7287183217 is an apocalyptic number.

It is an amenable number.

7287183217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287183217 is an equidigital number, since it uses as much as digits as its factorization.

7287183217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 46.

The square root of 7287183217 is about 85364.9999531424. Note that the first 4 decimals coincide. The cubic root of 7287183217 is about 1938.7414532596.

It can be divided in two parts, 728 and 7183217, that added together give a triangular number (7183945 = T₃₇₉₀).

The spelling of 7287183217 in words is "seven billion, two hundred eighty-seven million, one hundred eighty-three thousand, two hundred seventeen".