3646969 has 4 divisors (see below), whose sum is σ = 3667300. Its totient is φ = 3626640.

The previous prime is 3646963. The next prime is 3646997. The reversal of 3646969 is 9696463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 619369 + 3027600 = 787^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646969 - 2³ = 3646961 is a prime.

It is a super-2 number, since 2×3646969² = 26600765773922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646961) 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, 9894 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (916825).

Almost surely, 2^3646969 is an apocalyptic number.

It is an amenable number.

3646969 is a deficient number, since it is larger than the sum of its proper divisors (20331).

3646969 is a wasteful number, since it uses less digits than its factorization.

3646969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20330.

The product of its digits is 209952, while the sum is 43.

The square root of 3646969 is about 1909.7039037505. The cubic root of 3646969 is about 153.9255416746.

The spelling of 3646969 in words is "three million, six hundred forty-six thousand, nine hundred sixty-nine".