2663538 has 16 divisors (see below), whose sum is σ = 5558976. Its totient is φ = 849200.

The previous prime is 2663533. The next prime is 2663539. The reversal of 2663538 is 8353662.

It is a junction number, because it is equal to n+sod(n) for n = 2663499 and 2663508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9513 + ... + 9788.

It is an arithmetic number, because the mean of its divisors is an integer number (347436).

2^2663538 is an apocalyptic number.

2663538 is an abundant number, since it is smaller than the sum of its proper divisors (2895438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2663538 is a wasteful number, since it uses less digits than its factorization.

2663538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19329.

The product of its digits is 25920, while the sum is 33.

The square root of 2663538 is about 1632.0349260969. The cubic root of 2663538 is about 138.6180012392.

The spelling of 2663538 in words is "two million, six hundred sixty-three thousand, five hundred thirty-eight".