77089811 has 2 divisors, whose sum is σ = 77089812. Its totient is φ = 77089810.

The previous prime is 77089703. The next prime is 77089861. The reversal of 77089811 is 11898077.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77089811 is a prime.

It is not a weakly prime, because it can be changed into another prime (77089861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38544905 + 38544906.

It is an arithmetic number, because the mean of its divisors is an integer number (38544906).

Almost surely, 2^77089811 is an apocalyptic number.

77089811 is a deficient number, since it is larger than the sum of its proper divisors (1).

77089811 is an equidigital number, since it uses as much as digits as its factorization.

77089811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 77089811 is about 8780.0803527075. The cubic root of 77089811 is about 425.5974269253.

The spelling of 77089811 in words is "seventy-seven million, eighty-nine thousand, eight hundred eleven".