3706506 has 16 divisors (see below), whose sum is σ = 8236800. Its totient is φ = 1235484.

The previous prime is 3706499. The next prime is 3706529. The reversal of 3706506 is 6056073.

3706506 is a `hidden beast` number, since 3 + 7 + 0 + 650 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3706506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34266 + ... + 34373.

It is an arithmetic number, because the mean of its divisors is an integer number (514800).

Almost surely, 2^3706506 is an apocalyptic number.

3706506 is an abundant number, since it is smaller than the sum of its proper divisors (4530294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3706506 is a wasteful number, since it uses less digits than its factorization.

3706506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68650 (or 68644 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 3706506 is about 1925.2288175695. The cubic root of 3706506 is about 154.7586392714.

The spelling of 3706506 in words is "three million, seven hundred six thousand, five hundred six".