2663040 has 128 divisors (see below), whose sum is σ = 9057600. Its totient is φ = 663552.

The previous prime is 2663039. The next prime is 2663051. The reversal of 2663040 is 403662.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 2662998 and 2663016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36444 + ... + 36516.

2^2663040 is an apocalyptic number.

2663040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4528800).

2663040 is an abundant number, since it is smaller than the sum of its proper divisors (6394560).

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

2663040 is a wasteful number, since it uses less digits than its factorization.

2663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2663040 is about 1631.8823487004. The cubic root of 2663040 is about 138.6093615943.

The spelling of 2663040 in words is "two million, six hundred sixty-three thousand, forty".