1077765917 has 2 divisors, whose sum is σ = 1077765918. Its totient is φ = 1077765916.

The previous prime is 1077765877. The next prime is 1077765929. The reversal of 1077765917 is 7195677701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 997233241 + 80532676 = 31579^2 + 8974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1077765917 - 2⁶ = 1077765853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1077765217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538882958 + 538882959.

It is an arithmetic number, because the mean of its divisors is an integer number (538882959).

Almost surely, 2^1077765917 is an apocalyptic number.

It is an amenable number.

1077765917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077765917 is an equidigital number, since it uses as much as digits as its factorization.

1077765917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648270, while the sum is 50.

The square root of 1077765917 is about 32829.3453635615. The cubic root of 1077765917 is about 1025.2776299703.

The spelling of 1077765917 in words is "one billion, seventy-seven million, seven hundred sixty-five thousand, nine hundred seventeen".