8346661 has 4 divisors (see below), whose sum is σ = 8361900. Its totient is φ = 8331424.

The previous prime is 8346649. The next prime is 8346703. The reversal of 8346661 is 1666438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1666438 = 2 ⋅833219.

It can be written as a sum of positive squares in 2 ways, for example, as 3261636 + 5085025 = 1806^2 + 2255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8346661 is a prime.

It is a Duffinian number.

8346661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8346641) 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, 6766 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (2090475).

Almost surely, 2^8346661 is an apocalyptic number.

It is an amenable number.

8346661 is a deficient number, since it is larger than the sum of its proper divisors (15239).

8346661 is a wasteful number, since it uses less digits than its factorization.

8346661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15238.

The product of its digits is 20736, while the sum is 34.

The square root of 8346661 is about 2889.0588432914. The cubic root of 8346661 is about 202.8480910320.

The spelling of 8346661 in words is "eight million, three hundred forty-six thousand, six hundred sixty-one".