3645263 has 2 divisors, whose sum is σ = 3645264. Its totient is φ = 3645262.

The previous prime is 3645253. The next prime is 3645289. The reversal of 3645263 is 3625463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3645263 - 2⁸ = 3645007 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 3² + 6³ + 4⁶ + 5⁹ + 2¹³ + 6⁸ + 3² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822631 + 1822632.

It is an arithmetic number, because the mean of its divisors is an integer number (1822632).

Almost surely, 2^3645263 is an apocalyptic number.

3645263 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645263 is an equidigital number, since it uses as much as digits as its factorization.

3645263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 3645263 is about 1909.2571853996. The cubic root of 3645263 is about 153.9015365413.

The spelling of 3645263 in words is "three million, six hundred forty-five thousand, two hundred sixty-three".