7881223 has 8 divisors (see below), whose sum is σ = 9297920. Its totient is φ = 6537240.

The previous prime is 7881221. The next prime is 7881227. The reversal of 7881223 is 3221887.

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 7881223 - 2¹ = 7881221 is a prime.

It is a super-2 number, since 2×7881223² = 124227351951458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881221) 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, 17943 + ... + 18376.

It is an arithmetic number, because the mean of its divisors is an integer number (1162240).

Almost surely, 2^7881223 is an apocalyptic number.

7881223 is a deficient number, since it is larger than the sum of its proper divisors (1416697).

7881223 is a wasteful number, since it uses less digits than its factorization.

7881223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36357.

The product of its digits is 5376, while the sum is 31.

The square root of 7881223 is about 2807.3515989274. The cubic root of 7881223 is about 199.0052522540.

The spelling of 7881223 in words is "seven million, eight hundred eighty-one thousand, two hundred twenty-three".