8434661 has 4 divisors (see below), whose sum is σ = 8440992. Its totient is φ = 8428332.

The previous prime is 8434637. The next prime is 8434691. The reversal of 8434661 is 1664348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 8434661 - 2¹⁸ = 8172517 is a prime.

It is a super-2 number, since 2×8434661² = 142287012369842, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8434691) 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, 305 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (2110248).

Almost surely, 2^8434661 is an apocalyptic number.

It is an amenable number.

8434661 is a deficient number, since it is larger than the sum of its proper divisors (6331).

8434661 is a wasteful number, since it uses less digits than its factorization.

8434661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6330.

The product of its digits is 13824, while the sum is 32.

The square root of 8434661 is about 2904.2487841092. The cubic root of 8434661 is about 203.5584854043.

The spelling of 8434661 in words is "eight million, four hundred thirty-four thousand, six hundred sixty-one".