7801223 has 2 divisors, whose sum is σ = 7801224. Its totient is φ = 7801222.

The previous prime is 7801219. The next prime is 7801231. The reversal of 7801223 is 3221087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7801223 - 2² = 7801219 is a prime.

It is equal to p₅₂₇₂₃₄ and since 7801223 and 527234 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7801523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900611 + 3900612.

It is an arithmetic number, because the mean of its divisors is an integer number (3900612).

Almost surely, 2^7801223 is an apocalyptic number.

7801223 is a deficient number, since it is larger than the sum of its proper divisors (1).

7801223 is an equidigital number, since it uses as much as digits as its factorization.

7801223 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 23.

The square root of 7801223 is about 2793.0669522946. The cubic root of 7801223 is about 198.3296128734.

It can be divided in two parts, 780122 and 3, that multiplied together give a triangular number (2340366 = T₂₁₆₃).

The spelling of 7801223 in words is "seven million, eight hundred one thousand, two hundred twenty-three".