77228311 has 2 divisors, whose sum is σ = 77228312. Its totient is φ = 77228310.

The previous prime is 77228303. The next prime is 77228317. The reversal of 77228311 is 11382277.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77228311 - 2³ = 77228303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77228317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38614155 + 38614156.

It is an arithmetic number, because the mean of its divisors is an integer number (38614156).

Almost surely, 2^77228311 is an apocalyptic number.

77228311 is a deficient number, since it is larger than the sum of its proper divisors (1).

77228311 is an equidigital number, since it uses as much as digits as its factorization.

77228311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 31.

The square root of 77228311 is about 8787.9639849057. The cubic root of 77228311 is about 425.8521513720.

The spelling of 77228311 in words is "seventy-seven million, two hundred twenty-eight thousand, three hundred eleven".