3806217 has 16 divisors (see below), whose sum is σ = 5733760. Its totient is φ = 2494800.

The previous prime is 3806207. The next prime is 3806233. The reversal of 3806217 is 7126083.

3806217 is a `hidden beast` number, since 38 + 0 + 621 + 7 = 666.

It is not a de Polignac number, because 3806217 - 2¹¹ = 3804169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3806207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492 + ... + 2802.

It is an arithmetic number, because the mean of its divisors is an integer number (358360).

Almost surely, 2^3806217 is an apocalyptic number.

It is an amenable number.

3806217 is a deficient number, since it is larger than the sum of its proper divisors (1927543).

3806217 is a wasteful number, since it uses less digits than its factorization.

3806217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 3806217 is about 1950.9528441251. The cubic root of 3806217 is about 156.1341302027.

It can be divided in two parts, 380621 and 7, that added together give a triangular number (380628 = T₈₇₂).

The spelling of 3806217 in words is "three million, eight hundred six thousand, two hundred seventeen".