1066791769 has 12 divisors (see below), whose sum is σ = 1136554524. Its totient is φ = 1001099264.

The previous prime is 1066791743. The next prime is 1066791787. The reversal of 1066791769 is 9671976601.

It can be written as a sum of positive squares in 6 ways, for example, as 230888025 + 835903744 = 15195^2 + 28912^2 .

It is not a de Polignac number, because 1066791769 - 2¹³ = 1066783577 is a prime.

It is a super-2 number, since 2×1066791769² = 2276089356812298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066791799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96789 + ... + 107245.

It is an arithmetic number, because the mean of its divisors is an integer number (94712877).

Almost surely, 2^1066791769 is an apocalyptic number.

It is an amenable number.

1066791769 is a deficient number, since it is larger than the sum of its proper divisors (69762755).

1066791769 is a wasteful number, since it uses less digits than its factorization.

1066791769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10844 (or 10827 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 1066791769 is about 32661.7784114705. The cubic root of 1066791769 is about 1021.7858529207.

The spelling of 1066791769 in words is "one billion, sixty-six million, seven hundred ninety-one thousand, seven hundred sixty-nine".