2663361 has 20 divisors (see below), whose sum is σ = 4024944. Its totient is φ = 1755000.

The previous prime is 2663359. The next prime is 2663393. The reversal of 2663361 is 1633662.

2663361 is a `hidden beast` number, since 26 + 633 + 6 + 1 = 666.

It is not a de Polignac number, because 2663361 - 2¹ = 2663359 is a prime.

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

It is an Ulam number.

It is a Curzon number.

2663361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2663351) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10486 + ... + 10736.

2^2663361 is an apocalyptic number.

It is an amenable number.

2663361 is a deficient number, since it is larger than the sum of its proper divisors (1361583).

2663361 is a wasteful number, since it uses less digits than its factorization.

2663361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 385 counting only the distinct ones).

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

The square root of 2663361 is about 1631.9806984153. The cubic root of 2663361 is about 138.6149306454.

The spelling of 2663361 in words is "two million, six hundred sixty-three thousand, three hundred sixty-one".