8479661 has 4 divisors (see below), whose sum is σ = 8686524. Its totient is φ = 8272800.

The previous prime is 8479649. The next prime is 8479699. The reversal of 8479661 is 1669748.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 6708100 = 1331^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 8479661 - 2²² = 4285357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 206821 = 8479661 / (8 + 4 + 7 + 9 + 6 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479621) 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 3 ways as a sum of consecutive naturals, for example, 103370 + ... + 103451.

It is an arithmetic number, because the mean of its divisors is an integer number (2171631).

Almost surely, 2^8479661 is an apocalyptic number.

It is an amenable number.

8479661 is a deficient number, since it is larger than the sum of its proper divisors (206863).

8479661 is a wasteful number, since it uses less digits than its factorization.

8479661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206862.

The product of its digits is 72576, while the sum is 41.

The square root of 8479661 is about 2911.9857485915. The cubic root of 8479661 is about 203.9198470839.

The spelling of 8479661 in words is "eight million, four hundred seventy-nine thousand, six hundred sixty-one".