3868561 has 4 divisors (see below), whose sum is σ = 3898224. Its totient is φ = 3838900.

The previous prime is 3868549. The next prime is 3868567. The reversal of 3868561 is 1658683.

3868561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1658683 = 13 ⋅127591.

It is a cyclic number.

It is not a de Polignac number, because 3868561 - 2¹³ = 3860369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3868561.

It is not an unprimeable number, because it can be changed into a prime (3868567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14635 + ... + 14896.

It is an arithmetic number, because the mean of its divisors is an integer number (974556).

Almost surely, 2^3868561 is an apocalyptic number.

It is an amenable number.

3868561 is a deficient number, since it is larger than the sum of its proper divisors (29663).

3868561 is a wasteful number, since it uses less digits than its factorization.

3868561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29662.

The product of its digits is 34560, while the sum is 37.

The square root of 3868561 is about 1966.8657808808. The cubic root of 3868561 is about 156.9819850318.

The spelling of 3868561 in words is "three million, eight hundred sixty-eight thousand, five hundred sixty-one".