77699101 has 2 divisors, whose sum is σ = 77699102. Its totient is φ = 77699100.

The previous prime is 77699087. The next prime is 77699117. The reversal of 77699101 is 10199677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 17264025 = 7774^2 + 4155^2 .

It is a cyclic number.

It is not a de Polignac number, because 77699101 - 2¹³ = 77690909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77699191) 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, 38849550 + 38849551.

It is an arithmetic number, because the mean of its divisors is an integer number (38849551).

Almost surely, 2^77699101 is an apocalyptic number.

It is an amenable number.

77699101 is a deficient number, since it is larger than the sum of its proper divisors (1).

77699101 is an equidigital number, since it uses as much as digits as its factorization.

77699101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 77699101 is about 8814.7093542555. The cubic root of 77699101 is about 426.7157419002.

The spelling of 77699101 in words is "seventy-seven million, six hundred ninety-nine thousand, one hundred one".