3865655867 has 8 divisors (see below), whose sum is σ = 3884595600. Its totient is φ = 3846733344.

The previous prime is 3865655863. The next prime is 3865655879. The reversal of 3865655867 is 7685565683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3865655867 - 2² = 3865655863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865655863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785009 + ... + 789917.

It is an arithmetic number, because the mean of its divisors is an integer number (485574450).

Almost surely, 2^3865655867 is an apocalyptic number.

3865655867 is a deficient number, since it is larger than the sum of its proper divisors (18939733).

3865655867 is a wasteful number, since it uses less digits than its factorization.

3865655867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8605.

The product of its digits is 36288000, while the sum is 59.

The square root of 3865655867 is about 62174.3988069044. The cubic root of 3865655867 is about 1569.4267948194.

The spelling of 3865655867 in words is "three billion, eight hundred sixty-five million, six hundred fifty-five thousand, eight hundred sixty-seven".