8406646 has 8 divisors (see below), whose sum is σ = 12622320. Its totient is φ = 4199208.

The previous prime is 8406637. The next prime is 8406649. The reversal of 8406646 is 6466048.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8406649) 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, 2640 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (1577790).

Almost surely, 2^8406646 is an apocalyptic number.

8406646 is a deficient number, since it is larger than the sum of its proper divisors (4215674).

8406646 is a wasteful number, since it uses less digits than its factorization.

8406646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 8406646 is about 2899.4216664707. The cubic root of 8406646 is about 203.3328681049.

The spelling of 8406646 in words is "eight million, four hundred six thousand, six hundred forty-six".