3646993 has 16 divisors (see below), whose sum is σ = 4648320. Its totient is φ = 2785536.

The previous prime is 3646963. The next prime is 3646997. The reversal of 3646993 is 3996463.

3646993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

3646993 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a cyclic number.

It is not a de Polignac number, because 3646993 - 2⁵ = 3646961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3646997) 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 15 ways as a sum of consecutive naturals, for example, 1455 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (290520).

Almost surely, 2^3646993 is an apocalyptic number.

It is an amenable number.

3646993 is a deficient number, since it is larger than the sum of its proper divisors (1001327).

3646993 is a wasteful number, since it uses less digits than its factorization.

3646993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its digits is 104976, while the sum is 40.

The square root of 3646993 is about 1909.7101874368. The cubic root of 3646993 is about 153.9258793253.

Adding to 3646993 its product of digits (104976), we get a square (3751969 = 1937²).

It can be divided in two parts, 364 and 6993, that multiplied together give a palindrome (2545452).

The spelling of 3646993 in words is "three million, six hundred forty-six thousand, nine hundred ninety-three".