8649819 has 6 divisors (see below), whose sum is σ = 12494196. Its totient is φ = 5766540.

The previous prime is 8649803. The next prime is 8649847. The reversal of 8649819 is 9189468.

8649819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8649819 - 2⁴ = 8649803 is a prime.

It is a super-2 number, since 2×8649819² = 149638737465522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8649869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 480537 + ... + 480554.

It is an arithmetic number, because the mean of its divisors is an integer number (2082366).

Almost surely, 2^8649819 is an apocalyptic number.

8649819 is a deficient number, since it is larger than the sum of its proper divisors (3844377).

8649819 is a wasteful number, since it uses less digits than its factorization.

8649819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961097 (or 961094 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 8649819 is about 2941.0574628864. The cubic root of 8649819 is about 205.2748168297.

The spelling of 8649819 in words is "eight million, six hundred forty-nine thousand, eight hundred nineteen".