222487 has 4 divisors (see below), whose sum is σ = 229696. Its totient is φ = 215280.

The previous prime is 222461. The next prime is 222493. The reversal of 222487 is 784222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784222 = 2 ⋅392111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222487 is a prime.

It is a Duffinian number.

222487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222437) 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, 3558 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (57424).

2²²²⁴⁸⁷ is an apocalyptic number.

222487 is a deficient number, since it is larger than the sum of its proper divisors (7209).

222487 is an equidigital number, since it uses as much as digits as its factorization.

222487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208.

The product of its digits is 1792, while the sum is 25.

The square root of 222487 is about 471.6852764291. The cubic root of 222487 is about 60.5947335372.

The spelling of 222487 in words is "two hundred twenty-two thousand, four hundred eighty-seven".