2661363 has 16 divisors (see below), whose sum is σ = 3968800. Its totient is φ = 1762560.

The previous prime is 2661341. The next prime is 2661371. The reversal of 2661363 is 3631662.

It is not a de Polignac number, because 2661363 - 2⁵ = 2661331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661863) 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 15 ways as a sum of consecutive naturals, for example, 6303 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (248050).

2^2661363 is an apocalyptic number.

2661363 is a deficient number, since it is larger than the sum of its proper divisors (1307437).

2661363 is a wasteful number, since it uses less digits than its factorization.

2661363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 653 counting only the distinct ones).

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

The square root of 2661363 is about 1631.3684439758. The cubic root of 2661363 is about 138.5802599274.

Subtracting 2661363 from its reverse (3631662), we obtain a cube (970299 = 99³).

The spelling of 2661363 in words is "two million, six hundred sixty-one thousand, three hundred sixty-three".