8065861 has 4 divisors (see below), whose sum is σ = 8490400. Its totient is φ = 7641324.

The previous prime is 8065853. The next prime is 8065867. The reversal of 8065861 is 1685608.

It is a happy number.

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 8065861 - 2³ = 8065853 is a prime.

It is a super-2 number, since 2×8065861² = 130116227342642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8065867) 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, 212241 + ... + 212278.

It is an arithmetic number, because the mean of its divisors is an integer number (2122600).

Almost surely, 2^8065861 is an apocalyptic number.

It is an amenable number.

8065861 is a deficient number, since it is larger than the sum of its proper divisors (424539).

8065861 is a wasteful number, since it uses less digits than its factorization.

8065861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424538.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8065861 is about 2840.0459503325. The cubic root of 8065861 is about 200.5473423818.

The spelling of 8065861 in words is "eight million, sixty-five thousand, eight hundred sixty-one".