3664993 has 4 divisors (see below), whose sum is σ = 3674160. Its totient is φ = 3655828.

The previous prime is 3664963. The next prime is 3665017. The reversal of 3664993 is 3994663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3664993 - 2¹³ = 3656801 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3664993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3664943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3955 + ... + 4792.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^3664993 is an apocalyptic number.

It is an amenable number.

3664993 is a deficient number, since it is larger than the sum of its proper divisors (9167).

3664993 is an equidigital number, since it uses as much as digits as its factorization.

3664993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166.

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

The square root of 3664993 is about 1914.4171436758. The cubic root of 3664993 is about 154.1787013087.

The spelling of 3664993 in words is "three million, six hundred sixty-four thousand, nine hundred ninety-three".