2663601 has 4 divisors (see below), whose sum is σ = 3551472. Its totient is φ = 1775732.

The previous prime is 2663581. The next prime is 2663603. The reversal of 2663601 is 1063662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2663601 - 2⁵ = 2663569 is a prime.

It is a D-number.

2663601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2663603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443931 + ... + 443936.

It is an arithmetic number, because the mean of its divisors is an integer number (887868).

2^2663601 is an apocalyptic number.

It is an amenable number.

2663601 is a deficient number, since it is larger than the sum of its proper divisors (887871).

2663601 is an equidigital number, since it uses as much as digits as its factorization.

2663601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887870.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2663601 is about 1632.0542270403. The cubic root of 2663601 is about 138.6190941296.

The spelling of 2663601 in words is "two million, six hundred sixty-three thousand, six hundred one".