1069669661 has 2 divisors, whose sum is σ = 1069669662. Its totient is φ = 1069669660.

The previous prime is 1069669633. The next prime is 1069669697. The reversal of 1069669661 is 1669669601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055275225 + 14394436 = 32485^2 + 3794^2 .

It is an emirp because it is prime and its reverse (1669669601) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1996996901 and 1096996991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1069669661 is a prime.

It is a super-2 number, since 2×1069669661² = 2288386367327709842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1069669621) 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, 534834830 + 534834831.

It is an arithmetic number, because the mean of its divisors is an integer number (534834831).

Almost surely, 2^1069669661 is an apocalyptic number.

It is an amenable number.

1069669661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069669661 is an equidigital number, since it uses as much as digits as its factorization.

1069669661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 1069669661 is about 32705.8046988604. The cubic root of 1069669661 is about 1022.7038543183.

The spelling of 1069669661 in words is "one billion, sixty-nine million, six hundred sixty-nine thousand, six hundred sixty-one".