104623681 has 2 divisors, whose sum is σ = 104623682. Its totient is φ = 104623680.

The previous prime is 104623657. The next prime is 104623691. The reversal of 104623681 is 186326401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 14753281 = 9480^2 + 3841^2 .

It is a cyclic number.

It is not a de Polignac number, because 104623681 - 2⁷ = 104623553 is a prime.

It is a super-2 number, since 2×104623681² = 21892229251979522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104623621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52311840 + 52311841.

It is an arithmetic number, because the mean of its divisors is an integer number (52311841).

Almost surely, 2^104623681 is an apocalyptic number.

It is an amenable number.

104623681 is a deficient number, since it is larger than the sum of its proper divisors (1).

104623681 is an equidigital number, since it uses as much as digits as its factorization.

104623681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 104623681 is about 10228.5717966879. The cubic root of 104623681 is about 471.2051176922.

The spelling of 104623681 in words is "one hundred four million, six hundred twenty-three thousand, six hundred eighty-one".