8664819 has 4 divisors (see below), whose sum is σ = 11553096. Its totient is φ = 5776544.

The previous prime is 8664791. The next prime is 8664847. The reversal of 8664819 is 9184668.

8664819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8664791) and next prime (8664847).

It is a cyclic number.

It is not a de Polignac number, because 8664819 - 2⁵ = 8664787 is a prime.

It is a super-2 number, since 2×8664819² = 150158176605522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8664869) 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, 1444134 + ... + 1444139.

It is an arithmetic number, because the mean of its divisors is an integer number (2888274).

Almost surely, 2^8664819 is an apocalyptic number.

8664819 is a deficient number, since it is larger than the sum of its proper divisors (2888277).

8664819 is a wasteful number, since it uses less digits than its factorization.

8664819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888276.

The product of its digits is 82944, while the sum is 42.

The square root of 8664819 is about 2943.6064614687. The cubic root of 8664819 is about 205.3934067520.

The spelling of 8664819 in words is "eight million, six hundred sixty-four thousand, eight hundred nineteen".