2216777 has 2 divisors, whose sum is σ = 2216778. Its totient is φ = 2216776.

The previous prime is 2216761. The next prime is 2216803. The reversal of 2216777 is 7776122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1692601 + 524176 = 1301^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216777 - 2⁴ = 2216761 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108388 + 1108389.

It is an arithmetic number, because the mean of its divisors is an integer number (1108389).

2^2216777 is an apocalyptic number.

It is an amenable number.

2216777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216777 is an equidigital number, since it uses as much as digits as its factorization.

2216777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232, while the sum is 32.

The square root of 2216777 is about 1488.8844817514. The cubic root of 2216777 is about 130.3889142407.

The spelling of 2216777 in words is "two million, two hundred sixteen thousand, seven hundred seventy-seven".