3663531 has 6 divisors (see below), whose sum is σ = 5291780. Its totient is φ = 2442348.

The previous prime is 3663503. The next prime is 3663533. The reversal of 3663531 is 1353663.

It is not a de Polignac number, because 3663531 - 2¹³ = 3655339 is a prime.

It is a super-2 number, since 2×3663531² = 26842918775922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3663495 and 3663504.

It is not an unprimeable number, because it can be changed into a prime (3663533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203521 + ... + 203538.

Almost surely, 2^3663531 is an apocalyptic number.

3663531 is a deficient number, since it is larger than the sum of its proper divisors (1628249).

3663531 is a wasteful number, since it uses less digits than its factorization.

3663531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407065 (or 407062 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 3663531 is about 1914.0352661328. The cubic root of 3663531 is about 154.1581974732.

The spelling of 3663531 in words is "three million, six hundred sixty-three thousand, five hundred thirty-one".