3551663 has 2 divisors, whose sum is σ = 3551664. Its totient is φ = 3551662.

The previous prime is 3551641. The next prime is 3551677. The reversal of 3551663 is 3661553.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3551663 - 2⁶ = 3551599 is a prime.

It is a super-2 number, since 2×3551663² = 25228620131138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3551363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775831 + 1775832.

It is an arithmetic number, because the mean of its divisors is an integer number (1775832).

Almost surely, 2^3551663 is an apocalyptic number.

3551663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551663 is an equidigital number, since it uses as much as digits as its factorization.

3551663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 29.

The square root of 3551663 is about 1884.5856308483. The cubic root of 3551663 is about 152.5728470383.

The spelling of 3551663 in words is "three million, five hundred fifty-one thousand, six hundred sixty-three".