1220759077 has 2 divisors, whose sum is σ = 1220759078. Its totient is φ = 1220759076.

The previous prime is 1220759039. The next prime is 1220759107. The reversal of 1220759077 is 7709570221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170050436 + 50708641 = 34206^2 + 7121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220759077 - 2²³ = 1212370469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220759027) 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, 610379538 + 610379539.

It is an arithmetic number, because the mean of its divisors is an integer number (610379539).

Almost surely, 2^1220759077 is an apocalyptic number.

It is an amenable number.

1220759077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220759077 is an equidigital number, since it uses as much as digits as its factorization.

1220759077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 1220759077 is about 34939.3628591021. The cubic root of 1220759077 is about 1068.7512952255.

The spelling of 1220759077 in words is "one billion, two hundred twenty million, seven hundred fifty-nine thousand, seventy-seven".