5638777 has 2 divisors, whose sum is σ = 5638778. Its totient is φ = 5638776.

The previous prime is 5638769. The next prime is 5638799. The reversal of 5638777 is 7778365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3625216 + 2013561 = 1904^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638777 - 2³ = 5638769 is a prime.

It is not a weakly prime, because it can be changed into another prime (5638757) 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, 2819388 + 2819389.

It is an arithmetic number, because the mean of its divisors is an integer number (2819389).

Almost surely, 2^5638777 is an apocalyptic number.

It is an amenable number.

5638777 is a deficient number, since it is larger than the sum of its proper divisors (1).

5638777 is an equidigital number, since it uses as much as digits as its factorization.

5638777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 43.

The square root of 5638777 is about 2374.6109154975. The cubic root of 5638777 is about 177.9897418656.

The spelling of 5638777 in words is "five million, six hundred thirty-eight thousand, seven hundred seventy-seven".