8670649 has 8 divisors (see below), whose sum is σ = 9555392. Its totient is φ = 7817040.

The previous prime is 8670637. The next prime is 8670653. The reversal of 8670649 is 9460768.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8670649 is a prime.

It is a Duffinian number.

8670649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8670619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7197 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (1194424).

Almost surely, 2^8670649 is an apocalyptic number.

It is an amenable number.

8670649 is a deficient number, since it is larger than the sum of its proper divisors (884743).

8670649 is a wasteful number, since it uses less digits than its factorization.

8670649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15567.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 8670649 is about 2944.5965767826. The cubic root of 8670649 is about 205.4394617667.

The spelling of 8670649 in words is "eight million, six hundred seventy thousand, six hundred forty-nine".