3646905 has 16 divisors (see below), whose sum is σ = 5993664. Its totient is φ = 1892160.

The previous prime is 3646889. The next prime is 3646913. The reversal of 3646905 is 5096463.

It is a happy number.

It is not a de Polignac number, because 3646905 - 2⁴ = 3646889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2731 + ... + 3840.

It is an arithmetic number, because the mean of its divisors is an integer number (374604).

Almost surely, 2^3646905 is an apocalyptic number.

It is an amenable number.

3646905 is a deficient number, since it is larger than the sum of its proper divisors (2346759).

3646905 is a wasteful number, since it uses less digits than its factorization.

3646905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3646905 is about 1909.6871471526. The cubic root of 3646905 is about 153.9246412655.

The spelling of 3646905 in words is "three million, six hundred forty-six thousand, nine hundred five".