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3865685 = 541109173
BaseRepresentation
bin1110101111110001010101
321021101201112
432233301111
51442200220
6214504405
744600135
oct16576125
97241645
103865685
11220038a
121365105
13a546b5
14728ac5
155155c5
hex3afc55

3865685 has 16 divisors (see below), whose sum is σ = 4823280. Its totient is φ = 2972160.

The previous prime is 3865663. The next prime is 3865691. The reversal of 3865685 is 5865683.

It can be written as a sum of positive squares in 8 ways, for example, as 529 + 3865156 = 23^2 + 1966^2 .

It is not a de Polignac number, because 3865685 - 28 = 3865429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22259 + ... + 22431.

It is an arithmetic number, because the mean of its divisors is an integer number (301455).

Almost surely, 23865685 is an apocalyptic number.

It is an amenable number.

3865685 is a deficient number, since it is larger than the sum of its proper divisors (957595).

3865685 is a wasteful number, since it uses less digits than its factorization.

3865685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its digits is 172800, while the sum is 41.

The square root of 3865685 is about 1966.1345325282. The cubic root of 3865685 is about 156.9430737401.

The spelling of 3865685 in words is "three million, eight hundred sixty-five thousand, six hundred eighty-five".

Divisors: 1 5 41 109 173 205 545 865 4469 7093 18857 22345 35465 94285 773137 3865685