3706209 has 16 divisors (see below), whose sum is σ = 5913600. Its totient is φ = 2280528.

The previous prime is 3706201. The next prime is 3706247. The reversal of 3706209 is 9026073.

3706209 is a `hidden beast` number, since 37 + 0 + 620 + 9 = 666.

It is not a de Polignac number, because 3706209 - 2³ = 3706201 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (3706201) 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, 4929 + ... + 5630.

It is an arithmetic number, because the mean of its divisors is an integer number (369600).

Almost surely, 2^3706209 is an apocalyptic number.

3706209 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3706209 is a deficient number, since it is larger than the sum of its proper divisors (2207391).

3706209 is a wasteful number, since it uses less digits than its factorization.

3706209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581 (or 10575 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 3706209 is about 1925.1516823357. The cubic root of 3706209 is about 154.7545055901.

The spelling of 3706209 in words is "three million, seven hundred six thousand, two hundred nine".