906434665 has 4 divisors (see below), whose sum is σ = 1087721604. Its totient is φ = 725147728.

The previous prime is 906434663. The next prime is 906434693. The reversal of 906434665 is 566434609.

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 687068944 + 219365721 = 26212^2 + 14811^2 .

It is a cyclic number.

It is not a de Polignac number, because 906434665 - 2¹ = 906434663 is a prime.

It is a super-3 number, since 3×906434665³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906434663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90643462 + ... + 90643471.

It is an arithmetic number, because the mean of its divisors is an integer number (271930401).

Almost surely, 2^906434665 is an apocalyptic number.

It is an amenable number.

906434665 is a deficient number, since it is larger than the sum of its proper divisors (181286939).

906434665 is a wasteful number, since it uses less digits than its factorization.

906434665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181286938.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 906434665 is about 30107.0534094587. The cubic root of 906434665 is about 967.7848858478.

The spelling of 906434665 in words is "nine hundred six million, four hundred thirty-four thousand, six hundred sixty-five".