8067561 has 4 divisors (see below), whose sum is σ = 10756752. Its totient is φ = 5378372.

The previous prime is 8067557. The next prime is 8067569. The reversal of 8067561 is 1657608.

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 8067561 - 2² = 8067557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8067569) 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, 1344591 + ... + 1344596.

It is an arithmetic number, because the mean of its divisors is an integer number (2689188).

Almost surely, 2^8067561 is an apocalyptic number.

It is an amenable number.

8067561 is a deficient number, since it is larger than the sum of its proper divisors (2689191).

8067561 is a wasteful number, since it uses less digits than its factorization.

8067561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689190.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 8067561 is about 2840.3452254964. The cubic root of 8067561 is about 200.5614308357.

The spelling of 8067561 in words is "eight million, sixty-seven thousand, five hundred sixty-one".