77070811 has 2 divisors, whose sum is σ = 77070812. Its totient is φ = 77070810.

The previous prime is 77070793. The next prime is 77070817. The reversal of 77070811 is 11807077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77070811 - 2⁵ = 77070779 is a prime.

It is not a weakly prime, because it can be changed into another prime (77070817) 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, 38535405 + 38535406.

It is an arithmetic number, because the mean of its divisors is an integer number (38535406).

Almost surely, 2^77070811 is an apocalyptic number.

77070811 is a deficient number, since it is larger than the sum of its proper divisors (1).

77070811 is an equidigital number, since it uses as much as digits as its factorization.

77070811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 31.

The square root of 77070811 is about 8778.9982913770. The cubic root of 77070811 is about 425.5624589858.

Adding to 77070811 its reverse (11807077), we get a palindrome (88877888).

The spelling of 77070811 in words is "seventy-seven million, seventy thousand, eight hundred eleven".