104628221 has 2 divisors, whose sum is σ = 104628222. Its totient is φ = 104628220.

The previous prime is 104628211. The next prime is 104628241. The reversal of 104628221 is 122826401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87703225 + 16924996 = 9365^2 + 4114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104628221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104628211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52314110 + 52314111.

It is an arithmetic number, because the mean of its divisors is an integer number (52314111).

Almost surely, 2^104628221 is an apocalyptic number.

It is an amenable number.

104628221 is a deficient number, since it is larger than the sum of its proper divisors (1).

104628221 is an equidigital number, since it uses as much as digits as its factorization.

104628221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 104628221 is about 10228.7937216468. The cubic root of 104628221 is about 471.2119333585.

The spelling of 104628221 in words is "one hundred four million, six hundred twenty-eight thousand, two hundred twenty-one".