7857223 has 8 divisors (see below), whose sum is σ = 8618256. Its totient is φ = 7104000.

The previous prime is 7857211. The next prime is 7857233. The reversal of 7857223 is 3227587.

7857223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7857223 - 2¹³ = 7849031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7857233) 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, 273 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (1077282).

Almost surely, 2^7857223 is an apocalyptic number.

7857223 is a deficient number, since it is larger than the sum of its proper divisors (761033).

7857223 is a wasteful number, since it uses less digits than its factorization.

7857223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905.

The product of its digits is 23520, while the sum is 34.

The square root of 7857223 is about 2803.0738484742. The cubic root of 7857223 is about 198.8030424202.

It can be divided in two parts, 785 and 7223, that added together give a palindrome (8008).

The spelling of 7857223 in words is "seven million, eight hundred fifty-seven thousand, two hundred twenty-three".