3704509 has 4 divisors (see below), whose sum is σ = 3719520. Its totient is φ = 3689500.

The previous prime is 3704507. The next prime is 3704513. The reversal of 3704509 is 9054073.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3704509 - 2¹ = 3704507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3704507) 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, 7129 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (929880).

Almost surely, 2^3704509 is an apocalyptic number.

It is an amenable number.

3704509 is a deficient number, since it is larger than the sum of its proper divisors (15011).

3704509 is a wasteful number, since it uses less digits than its factorization.

3704509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3704509 is about 1924.7101080422. The cubic root of 3704509 is about 154.7308405374.

The spelling of 3704509 in words is "three million, seven hundred four thousand, five hundred nine".