8299561 has 4 divisors (see below), whose sum is σ = 8736400. Its totient is φ = 7862724.

The previous prime is 8299549. The next prime is 8299567. The reversal of 8299561 is 1659928.

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.

It is a cyclic number.

It is not a de Polignac number, because 8299561 - 2²¹ = 6202409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8299567) 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, 218391 + ... + 218428.

It is an arithmetic number, because the mean of its divisors is an integer number (2184100).

Almost surely, 2^8299561 is an apocalyptic number.

It is an amenable number.

8299561 is a deficient number, since it is larger than the sum of its proper divisors (436839).

8299561 is a wasteful number, since it uses less digits than its factorization.

8299561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436838.

The product of its digits is 38880, while the sum is 40.

The square root of 8299561 is about 2880.8958676079. The cubic root of 8299561 is about 202.4658154966.

The spelling of 8299561 in words is "eight million, two hundred ninety-nine thousand, five hundred sixty-one".