8370661 has 8 divisors (see below), whose sum is σ = 9185400. Its totient is φ = 7580352.

The previous prime is 8370631. The next prime is 8370673. The reversal of 8370661 is 1660738.

It can be written as a sum of positive squares in 4 ways, for example, as 2992900 + 5377761 = 1730^2 + 2319^2 .

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

It is not a de Polignac number, because 8370661 - 2¹⁵ = 8337893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8370611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (1148175).

Almost surely, 2^8370661 is an apocalyptic number.

It is an amenable number.

8370661 is a deficient number, since it is larger than the sum of its proper divisors (814739).

8370661 is a wasteful number, since it uses less digits than its factorization.

8370661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12215.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 8370661 is about 2893.2094635543. The cubic root of 8370661 is about 203.0423282033.

The spelling of 8370661 in words is "eight million, three hundred seventy thousand, six hundred sixty-one".