3644629 has 2 divisors, whose sum is σ = 3644630. Its totient is φ = 3644628.

The previous prime is 3644621. The next prime is 3644653. The reversal of 3644629 is 9264463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2640625 + 1004004 = 1625^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644629 - 2³ = 3644621 is a prime.

3644629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3644594 and 3644603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822314 + 1822315.

It is an arithmetic number, because the mean of its divisors is an integer number (1822315).

Almost surely, 2^3644629 is an apocalyptic number.

It is an amenable number.

3644629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644629 is an equidigital number, since it uses as much as digits as its factorization.

3644629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 3644629 is about 1909.0911450216. The cubic root of 3644629 is about 153.8926136157.

The spelling of 3644629 in words is "three million, six hundred forty-four thousand, six hundred twenty-nine".