76777073 has 2 divisors, whose sum is σ = 76777074. Its totient is φ = 76777072.

The previous prime is 76777039. The next prime is 76777079. The reversal of 76777073 is 37077767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49392784 + 27384289 = 7028^2 + 5233^2 .

It is a cyclic number.

It is not a de Polignac number, because 76777073 - 2⁶ = 76777009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (76777079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388536 + 38388537.

It is an arithmetic number, because the mean of its divisors is an integer number (38388537).

Almost surely, 2^76777073 is an apocalyptic number.

It is an amenable number.

76777073 is a deficient number, since it is larger than the sum of its proper divisors (1).

76777073 is an equidigital number, since it uses as much as digits as its factorization.

76777073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302526, while the sum is 44.

The square root of 76777073 is about 8762.2527354556. The cubic root of 76777073 is about 425.0211255935.

The spelling of 76777073 in words is "seventy-six million, seven hundred seventy-seven thousand, seventy-three".