3646472 has 8 divisors (see below), whose sum is σ = 6837150. Its totient is φ = 1823232.

The previous prime is 3646471. The next prime is 3646481. The reversal of 3646472 is 2746463.

It can be written as a sum of positive squares in only one way, i.e., 2172676 + 1473796 = 1474^2 + 1214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 3⁴ + 6⁸ + 4² + 6⁸ + 4⁹ + 7⁵ + 2¹³ .

It is not an unprimeable number, because it can be changed into a prime (3646471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227897 + ... + 227912.

Almost surely, 2^3646472 is an apocalyptic number.

It is an amenable number.

3646472 is a deficient number, since it is larger than the sum of its proper divisors (3190678).

3646472 is a wasteful number, since it uses less digits than its factorization.

3646472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455815 (or 455811 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 3646472 is about 1909.5737744324. The cubic root of 3646472 is about 153.9185491584.

Subtracting from 3646472 its reverse (2746463), we obtain a palindrome (900009).

The spelling of 3646472 in words is "three million, six hundred forty-six thousand, four hundred seventy-two".