2259687 has 4 divisors (see below), whose sum is σ = 3012920. Its totient is φ = 1506456.

The previous prime is 2259671. The next prime is 2259703. The reversal of 2259687 is 7869522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2259671) and next prime (2259703).

It is not a de Polignac number, because 2259687 - 2⁴ = 2259671 is a prime.

It is a D-number.

It is a Duffinian number.

2259687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376612 + ... + 376617.

It is an arithmetic number, because the mean of its divisors is an integer number (753230).

2^2259687 is an apocalyptic number.

2259687 is a deficient number, since it is larger than the sum of its proper divisors (753233).

2259687 is an equidigital number, since it uses as much as digits as its factorization.

2259687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753232.

The product of its digits is 60480, while the sum is 39.

The square root of 2259687 is about 1503.2255319811. The cubic root of 2259687 is about 131.2248532322.

The spelling of 2259687 in words is "two million, two hundred fifty-nine thousand, six hundred eighty-seven".