698774999969 has 2 divisors, whose sum is σ = 698774999970. Its totient is φ = 698774999968.

The previous prime is 698774999939. The next prime is 698775000013. The reversal of 698774999969 is 969999477896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692909737744 + 5865262225 = 832412^2 + 76585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698774999969 is a prime.

It is a super-2 number, since 2×698774999969² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (698774999939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349387499984 + 349387499985.

It is an arithmetic number, because the mean of its divisors is an integer number (349387499985).

Almost surely, 2^698774999969 is an apocalyptic number.

It is an amenable number.

698774999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

698774999969 is an equidigital number, since it uses as much as digits as its factorization.

698774999969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29998781568, while the sum is 92.

The spelling of 698774999969 in words is "six hundred ninety-eight billion, seven hundred seventy-four million, nine hundred ninety-nine thousand, nine hundred sixty-nine".