1006549769 has 4 divisors (see below), whose sum is σ = 1020338196. Its totient is φ = 992761344.

The previous prime is 1006549741. The next prime is 1006549793. The reversal of 1006549769 is 9679456001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9679456001 = 4483 ⋅2159147.

It can be written as a sum of positive squares in 2 ways, for example, as 864654025 + 141895744 = 29405^2 + 11912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006549769 is a prime.

It is a super-2 number, since 2×1006549769² = 2026284874947906722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006549729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6894104 + ... + 6894249.

It is an arithmetic number, because the mean of its divisors is an integer number (255084549).

Almost surely, 2^1006549769 is an apocalyptic number.

It is an amenable number.

1006549769 is a deficient number, since it is larger than the sum of its proper divisors (13788427).

1006549769 is an equidigital number, since it uses as much as digits as its factorization.

1006549769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13788426.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1006549769 is about 31726.1685206392. The cubic root of 1006549769 is about 1002.1785069943.

The spelling of 1006549769 in words is "one billion, six million, five hundred forty-nine thousand, seven hundred sixty-nine".