8434561 has 4 divisors (see below), whose sum is σ = 8640324. Its totient is φ = 8228800.

The previous prime is 8434523. The next prime is 8434607. The reversal of 8434561 is 1654348.

It is a happy number.

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 2822400 + 5612161 = 1680^2 + 2369^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434561 - 2²³ = 45953 is a prime.

It is a super-2 number, since 2×8434561² = 142283638525442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8434501) 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, 102820 + ... + 102901.

It is an arithmetic number, because the mean of its divisors is an integer number (2160081).

Almost surely, 2^8434561 is an apocalyptic number.

It is an amenable number.

8434561 is a deficient number, since it is larger than the sum of its proper divisors (205763).

8434561 is a wasteful number, since it uses less digits than its factorization.

8434561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205762.

The product of its digits is 11520, while the sum is 31.

The square root of 8434561 is about 2904.2315679023. The cubic root of 8434561 is about 203.5576809488.

The spelling of 8434561 in words is "eight million, four hundred thirty-four thousand, five hundred sixty-one".