699576509969 has 2 divisors, whose sum is σ = 699576509970. Its totient is φ = 699576509968.

The previous prime is 699576509939. The next prime is 699576509981. The reversal of 699576509969 is 969905675996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440780471569 + 258796038400 = 663913^2 + 508720^2 .

It is a cyclic number.

It is not a de Polignac number, because 699576509969 - 2³² = 695281542673 is a prime.

It is a super-2 number, since 2×699576509969² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 699576509893 and 699576509902.

It is not a weakly prime, because it can be changed into another prime (699576509939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349788254984 + 349788254985.

It is an arithmetic number, because the mean of its divisors is an integer number (349788254985).

Almost surely, 2^699576509969 is an apocalyptic number.

It is an amenable number.

699576509969 is a deficient number, since it is larger than the sum of its proper divisors (1).

699576509969 is an equidigital number, since it uses as much as digits as its factorization.

699576509969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2232052200, while the sum is 80.

The spelling of 699576509969 in words is "six hundred ninety-nine billion, five hundred seventy-six million, five hundred nine thousand, nine hundred sixty-nine".