8435661 has 16 divisors (see below), whose sum is σ = 12282816. Its totient is φ = 5118336.

The previous prime is 8435659. The next prime is 8435681. The reversal of 8435661 is 1665348.

8435661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8435661 - 2¹ = 8435659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8435681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366 + ... + 4328.

It is an arithmetic number, because the mean of its divisors is an integer number (767676).

Almost surely, 2^8435661 is an apocalyptic number.

It is an amenable number.

8435661 is a deficient number, since it is larger than the sum of its proper divisors (3847155).

8435661 is a wasteful number, since it uses less digits than its factorization.

8435661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its digits is 17280, while the sum is 33.

The square root of 8435661 is about 2904.4209405663. The cubic root of 8435661 is about 203.5665296099.

The spelling of 8435661 in words is "eight million, four hundred thirty-five thousand, six hundred sixty-one".