2287639 has 8 divisors (see below), whose sum is σ = 2468880. Its totient is φ = 2111616.

The previous prime is 2287633. The next prime is 2287661. The reversal of 2287639 is 9367822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2287639 - 2¹³ = 2279447 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 8 + 7³ + 6 + 3¹⁰ + 9 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2287598 and 2287607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287633) 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, 369 + ... + 2170.

It is an arithmetic number, because the mean of its divisors is an integer number (308610).

2^2287639 is an apocalyptic number.

2287639 is a deficient number, since it is larger than the sum of its proper divisors (181241).

2287639 is a wasteful number, since it uses less digits than its factorization.

2287639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609.

The product of its digits is 36288, while the sum is 37.

The square root of 2287639 is about 1512.4942975099. The cubic root of 2287639 is about 131.7637148808.

It can be divided in two parts, 2287 and 639, that added together give a triangular number (2926 = T₇₆).

The spelling of 2287639 in words is "two million, two hundred eighty-seven thousand, six hundred thirty-nine".