699771946777 has 2 divisors, whose sum is σ = 699771946778. Its totient is φ = 699771946776.

The previous prime is 699771946771. The next prime is 699771946801. The reversal of 699771946777 is 777649177996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693962305936 + 5809640841 = 833044^2 + 76221^2 .

It is a cyclic number.

It is not a de Polignac number, because 699771946777 - 2¹⁹ = 699771422489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 699771946697 and 699771946706.

It is not a weakly prime, because it can be changed into another prime (699771946771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349885973388 + 349885973389.

It is an arithmetic number, because the mean of its divisors is an integer number (349885973389).

Almost surely, 2^699771946777 is an apocalyptic number.

It is an amenable number.

699771946777 is a deficient number, since it is larger than the sum of its proper divisors (1).

699771946777 is an equidigital number, since it uses as much as digits as its factorization.

699771946777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764331632, while the sum is 79.

The spelling of 699771946777 in words is "six hundred ninety-nine billion, seven hundred seventy-one million, nine hundred forty-six thousand, seven hundred seventy-seven".