3706709 has 4 divisors (see below), whose sum is σ = 3710604. Its totient is φ = 3702816.

The previous prime is 3706679. The next prime is 3706723. The reversal of 3706709 is 9076073.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2093809 + 1612900 = 1447^2 + 1270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3706709 is a prime.

It is a super-2 number, since 2×3706709² = 27479383221362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3706009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (927651).

Almost surely, 2^3706709 is an apocalyptic number.

It is an amenable number.

3706709 is a deficient number, since it is larger than the sum of its proper divisors (3895).

3706709 is a wasteful number, since it uses less digits than its factorization.

3706709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 3706709 is about 1925.2815378536. The cubic root of 3706709 is about 154.7614645225.

The spelling of 3706709 in words is "three million, seven hundred six thousand, seven hundred nine".