2663481 has 4 divisors (see below), whose sum is σ = 3551312. Its totient is φ = 1775652.

The previous prime is 2663467. The next prime is 2663491. The reversal of 2663481 is 1843662.

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 not a de Polignac number, because 2663481 - 2¹⁴ = 2647097 is a prime.

It is a super-2 number, since 2×2663481² = 14188262074722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2663431) 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, 443911 + ... + 443916.

It is an arithmetic number, because the mean of its divisors is an integer number (887828).

2^2663481 is an apocalyptic number.

It is an amenable number.

2663481 is a deficient number, since it is larger than the sum of its proper divisors (887831).

2663481 is an equidigital number, since it uses as much as digits as its factorization.

2663481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887830.

The product of its digits is 6912, while the sum is 30.

The square root of 2663481 is about 1632.0174631419. The cubic root of 2663481 is about 138.6170124188.

The spelling of 2663481 in words is "two million, six hundred sixty-three thousand, four hundred eighty-one".