906646609 has 8 divisors (see below), whose sum is σ = 989374752. Its totient is φ = 823969440.

The previous prime is 906646607. The next prime is 906646621.

906646609 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 906646609 - 2¹ = 906646607 is a prime.

It is a super-2 number, since 2×906646609² = 1644016147222397762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906646603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30997 + ... + 52669.

It is an arithmetic number, because the mean of its divisors is an integer number (123671844).

Almost surely, 2^906646609 is an apocalyptic number.

It is an amenable number.

906646609 is a deficient number, since it is larger than the sum of its proper divisors (82728143).

906646609 is a wasteful number, since it uses less digits than its factorization.

906646609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25487.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 906646609 is about 30110.5730433680. The cubic root of 906646609 is about 967.8603096384.

The spelling of 906646609 in words is "nine hundred six million, six hundred forty-six thousand, six hundred nine".