3646386 has 12 divisors (see below), whose sum is σ = 7900542. Its totient is φ = 1215456.

The previous prime is 3646369. The next prime is 3646393. The reversal of 3646386 is 6836463.

3646386 is a `hidden beast` number, since 3 + 646 + 3 + 8 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 670761 = 1725^2 + 819^2 .

It is a super-2 number, since 2×3646386² = 26592261721992, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁴ + 6⁷ + 4³ + 6⁸ + 3⁸ + 8³ + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 3646386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101271 + ... + 101306.

Almost surely, 2^3646386 is an apocalyptic number.

3646386 is an abundant number, since it is smaller than the sum of its proper divisors (4254156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3646386 is a wasteful number, since it uses less digits than its factorization.

3646386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202585 (or 202582 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 3646386 is about 1909.5512561856. The cubic root of 3646386 is about 153.9173391213.

Subtracting from 3646386 its sum of digits (36), we obtain a triangular number (3646350 = T₂₇₀₀).

The spelling of 3646386 in words is "three million, six hundred forty-six thousand, three hundred eighty-six".