3664631 has 2 divisors, whose sum is σ = 3664632. Its totient is φ = 3664630.

The previous prime is 3664561. The next prime is 3664649. The reversal of 3664631 is 1364663.

3664631 is nontrivially palindromic in base 4.

It is a strong prime.

It is an emirp because it is prime and its reverse (1364663) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3664631 is a prime.

It is a super-2 number, since 2×3664631² = 26859040732322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 3664594 and 3664603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3664651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832315 + 1832316.

It is an arithmetic number, because the mean of its divisors is an integer number (1832316).

Almost surely, 2^3664631 is an apocalyptic number.

3664631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3664631 is an equidigital number, since it uses as much as digits as its factorization.

3664631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 3664631 is about 1914.3225955935. The cubic root of 3664631 is about 154.1736249436.

Subtracting from 3664631 its reverse (1364663), we obtain a cube (2299968 = 132³).

The spelling of 3664631 in words is "three million, six hundred sixty-four thousand, six hundred thirty-one".