3645349 has 2 divisors, whose sum is σ = 3645350. Its totient is φ = 3645348.

The previous prime is 3645347. The next prime is 3645371. The reversal of 3645349 is 9435463.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 1117249 = 1590^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645349 - 2¹ = 3645347 is a prime.

Together with 3645347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822674 + 1822675.

It is an arithmetic number, because the mean of its divisors is an integer number (1822675).

Almost surely, 2^3645349 is an apocalyptic number.

It is an amenable number.

3645349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645349 is an equidigital number, since it uses as much as digits as its factorization.

3645349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 3645349 is about 1909.2797071147. The cubic root of 3645349 is about 153.9027468269.

The spelling of 3645349 in words is "three million, six hundred forty-five thousand, three hundred forty-nine".