3861545 has 8 divisors (see below), whose sum is σ = 4703424. Its totient is φ = 3042864.

The previous prime is 3861521. The next prime is 3861547. The reversal of 3861545 is 5451683.

It is a happy number.

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 3861545 - 2⁸ = 3861289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3861547) 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, 5429 + ... + 6098.

It is an arithmetic number, because the mean of its divisors is an integer number (587928).

Almost surely, 2^3861545 is an apocalyptic number.

It is an amenable number.

3861545 is a deficient number, since it is larger than the sum of its proper divisors (841879).

3861545 is a wasteful number, since it uses less digits than its factorization.

3861545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11599.

The product of its digits is 14400, while the sum is 32.

The square root of 3861545 is about 1965.0814232494. The cubic root of 3861545 is about 156.8870270616.

The spelling of 3861545 in words is "three million, eight hundred sixty-one thousand, five hundred forty-five".