2731663 has 8 divisors (see below), whose sum is σ = 3010176. Its totient is φ = 2458200.

The previous prime is 2731637. The next prime is 2731667. The reversal of 2731663 is 3661372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2731663 - 2²¹ = 634511 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 (2731667) 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 in 7 ways as a sum of consecutive naturals, for example, 73 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (376272).

2^2731663 is an apocalyptic number.

2731663 is a deficient number, since it is larger than the sum of its proper divisors (278513).

2731663 is a wasteful number, since it uses less digits than its factorization.

2731663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

The product of its digits is 4536, while the sum is 28.

The square root of 2731663 is about 1652.7743342635. The cubic root of 2731663 is about 139.7898718480.

It can be divided in two parts, 273 and 1663, that added together give a square (1936 = 44²).

The spelling of 2731663 in words is "two million, seven hundred thirty-one thousand, six hundred sixty-three".