906685469 has 4 divisors (see below), whose sum is σ = 923792796. Its totient is φ = 889578144.

The previous prime is 906685459. The next prime is 906685471. The reversal of 906685469 is 964586609.

906685469 = 2872² + 2873² + ... + 2977².

906685469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 458516569 + 448168900 = 21413^2 + 21170^2 .

It is a cyclic number.

It is not a de Polignac number, because 906685469 - 2¹⁶ = 906619933 is a prime.

It is a super-2 number, since 2×906685469² = 1644157079391499922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 17107273 = 906685469 / (9 + 0 + 6 + 6 + 8 + 5 + 4 + 6 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 906685469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906685459) 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, 8553584 + ... + 8553689.

It is an arithmetic number, because the mean of its divisors is an integer number (230948199).

Almost surely, 2^906685469 is an apocalyptic number.

It is an amenable number.

906685469 is a deficient number, since it is larger than the sum of its proper divisors (17107327).

906685469 is a wasteful number, since it uses less digits than its factorization.

906685469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17107326.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 906685469 is about 30111.2183247374. The cubic root of 906685469 is about 967.8741373393.

The spelling of 906685469 in words is "nine hundred six million, six hundred eighty-five thousand, four hundred sixty-nine".