3545865 has 12 divisors (see below), whose sum is σ = 6146244. Its totient is φ = 1891104.

The previous prime is 3545851. The next prime is 3545881. The reversal of 3545865 is 5685453.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 1411344 = 1461^2 + 1188^2 .

It is not a de Polignac number, because 3545865 - 2¹⁰ = 3544841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39354 + ... + 39443.

It is an arithmetic number, because the mean of its divisors is an integer number (512187).

Almost surely, 2^3545865 is an apocalyptic number.

It is an amenable number.

3545865 is a deficient number, since it is larger than the sum of its proper divisors (2600379).

3545865 is a wasteful number, since it uses less digits than its factorization.

3545865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78808 (or 78805 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 3545865 is about 1883.0467333553. The cubic root of 3545865 is about 152.4897780482.

The spelling of 3545865 in words is "three million, five hundred forty-five thousand, eight hundred sixty-five".