77120699 has 2 divisors, whose sum is σ = 77120700. Its totient is φ = 77120698.

The previous prime is 77120663. The next prime is 77120717. The reversal of 77120699 is 99602177.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77120699 - 2¹² = 77116603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77120609) 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, 38560349 + 38560350.

It is an arithmetic number, because the mean of its divisors is an integer number (38560350).

Almost surely, 2^77120699 is an apocalyptic number.

77120699 is a deficient number, since it is larger than the sum of its proper divisors (1).

77120699 is an equidigital number, since it uses as much as digits as its factorization.

77120699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 77120699 is about 8781.8391581718. The cubic root of 77120699 is about 425.6542614918.

The spelling of 77120699 in words is "seventy-seven million, one hundred twenty thousand, six hundred ninety-nine".