8661319 has 4 divisors (see below), whose sum is σ = 8669320. Its totient is φ = 8653320.

The previous prime is 8661311. The next prime is 8661353. The reversal of 8661319 is 9131668.

8661319 is digitally balanced in base 3, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8661319 - 2³ = 8661311 is a prime.

It is a super-2 number, since 2×8661319² = 150036893639522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661311) 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, 2064 + ... + 4645.

It is an arithmetic number, because the mean of its divisors is an integer number (2167330).

Almost surely, 2^8661319 is an apocalyptic number.

8661319 is a deficient number, since it is larger than the sum of its proper divisors (8001).

8661319 is a wasteful number, since it uses less digits than its factorization.

8661319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000.

The product of its digits is 7776, while the sum is 34.

The square root of 8661319 is about 2943.0118926025. The cubic root of 8661319 is about 205.3657480193.

The spelling of 8661319 in words is "eight million, six hundred sixty-one thousand, three hundred nineteen".