3661263 has 6 divisors (see below), whose sum is σ = 5288504. Its totient is φ = 2440836.

The previous prime is 3661249. The next prime is 3661271. The reversal of 3661263 is 3621663.

It is not a de Polignac number, because 3661263 - 2⁴ = 3661247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661963) 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 in 5 ways as a sum of consecutive naturals, for example, 203395 + ... + 203412.

Almost surely, 2^3661263 is an apocalyptic number.

3661263 is a deficient number, since it is larger than the sum of its proper divisors (1627241).

3661263 is a wasteful number, since it uses less digits than its factorization.

3661263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406813 (or 406810 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 3661263 is about 1913.4427088366. The cubic root of 3661263 is about 154.1263790840.

The spelling of 3661263 in words is "three million, six hundred sixty-one thousand, two hundred sixty-three".