2287641 has 4 divisors (see below), whose sum is σ = 3050192. Its totient is φ = 1525092.

The previous prime is 2287633. The next prime is 2287661. The reversal of 2287641 is 1467822.

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 2287641 - 2³ = 2287633 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2287599 and 2287608.

It is not an unprimeable number, because it can be changed into a prime (2287661) 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, 381271 + ... + 381276.

It is an arithmetic number, because the mean of its divisors is an integer number (762548).

2^2287641 is an apocalyptic number.

It is an amenable number.

2287641 is a deficient number, since it is larger than the sum of its proper divisors (762551).

2287641 is an equidigital number, since it uses as much as digits as its factorization.

2287641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762550.

The product of its digits is 5376, while the sum is 30.

The square root of 2287641 is about 1512.4949586693. The cubic root of 2287641 is about 131.7637532796.

The spelling of 2287641 in words is "two million, two hundred eighty-seven thousand, six hundred forty-one".