1987223 has 8 divisors (see below), whose sum is σ = 2370048. Its totient is φ = 1629144.

The previous prime is 1987217. The next prime is 1987231. The reversal of 1987223 is 3227891.

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 1987223 - 2⁸ = 1986967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1987223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987123) 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, 6011 + ... + 6332.

It is an arithmetic number, because the mean of its divisors is an integer number (296256).

2^1987223 is an apocalyptic number.

1987223 is a deficient number, since it is larger than the sum of its proper divisors (382825).

1987223 is a wasteful number, since it uses less digits than its factorization.

1987223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12373.

The product of its digits is 6048, while the sum is 32.

The square root of 1987223 is about 1409.6889727880. The cubic root of 1987223 is about 125.7232314202.

The spelling of 1987223 in words is "one million, nine hundred eighty-seven thousand, two hundred twenty-three".