3864545 has 4 divisors (see below), whose sum is σ = 4637460. Its totient is φ = 3091632.

The previous prime is 3864541. The next prime is 3864551. The reversal of 3864545 is 5454683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5454683 = 13 ⋅419591.

It can be written as a sum of positive squares in 2 ways, for example, as 2927521 + 937024 = 1711^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 3864545 - 2² = 3864541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3864541) 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, 386450 + ... + 386459.

It is an arithmetic number, because the mean of its divisors is an integer number (1159365).

Almost surely, 2^3864545 is an apocalyptic number.

It is an amenable number.

3864545 is a deficient number, since it is larger than the sum of its proper divisors (772915).

3864545 is an equidigital number, since it uses as much as digits as its factorization.

3864545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772914.

The product of its digits is 57600, while the sum is 35.

The square root of 3864545 is about 1965.8446022003. The cubic root of 3864545 is about 156.9276445907.

The spelling of 3864545 in words is "three million, eight hundred sixty-four thousand, five hundred forty-five".