3646513 has 6 divisors (see below), whose sum is σ = 3948774. Its totient is φ = 3365856.

The previous prime is 3646507. The next prime is 3646523. The reversal of 3646513 is 3156463.

3646513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 138384 + 3508129 = 372^2 + 1873^2 .

It is not a de Polignac number, because 3646513 - 2⁵ = 3646481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10620 + ... + 10957.

It is an arithmetic number, because the mean of its divisors is an integer number (658129).

Almost surely, 2^3646513 is an apocalyptic number.

It is an amenable number.

3646513 is a deficient number, since it is larger than the sum of its proper divisors (302261).

3646513 is a wasteful number, since it uses less digits than its factorization.

3646513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21603 (or 21590 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 3646513 is about 1909.5845097822. The cubic root of 3646513 is about 153.9191260299.

It can be divided in two parts, 364 and 6513, that multiplied together give a palindrome (2370732).

The spelling of 3646513 in words is "three million, six hundred forty-six thousand, five hundred thirteen".