870223 has 2 divisors, whose sum is σ = 870224. Its totient is φ = 870222.

The previous prime is 870211. The next prime is 870229. The reversal of 870223 is 322078.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870223 - 2¹³ = 862031 is a prime.

870223 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 870194 and 870203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435111 + 435112.

It is an arithmetic number, because the mean of its divisors is an integer number (435112).

2⁸⁷⁰²²³ is an apocalyptic number.

870223 is a deficient number, since it is larger than the sum of its proper divisors (1).

870223 is an equidigital number, since it uses as much as digits as its factorization.

870223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 870223 is about 932.8574381973. The cubic root of 870223 is about 95.4721829018.

It can be divided in two parts, 87022 and 3, that added together give a square (87025 = 295²).

The spelling of 870223 in words is "eight hundred seventy thousand, two hundred twenty-three".